PLEASE HELP ME
1) What is the difference between an exothermic and an endothermic process?
2) Which changes of state are exothermic and which are endothermic
Answers
Answer:
1)In simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system
2)Fusion, vaporization, and sublimation are endothermic processes, whereas freezing, condensation, and deposition are exothermic processes.
Answer:
In simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system.
Explanation:
googled it for you hope it helps.
:)
Related Questions
The Ksp of calcite (PbSO4) is 2.5 x10-9.a) Find the equilibrium concentration of Pb+2 whenPbSO4 is placed in water.(Assume saturation)b) Will the solubility of PbSO4 increase or decreaseif the pH is lowered? EXPLAIN, using chemical equations!
Answers
The question pertains to the solubility equilibrium of lead sulfate (PbSO4) in water.
The solubility product constant (Ksp) of PbSO4 is given, and the equilibrium concentration of Pb+2 ions in water is to be determined when PbSO4 is saturated in water. The solubility of PbSO4 is dependent on its Ksp value, and the concentration of Pb+2 ions in water will reach an equilibrium with the solid PbSO4. The second part of the question asks whether the solubility of PbSO4 will increase or decrease if the pH is lowered, and asks for an explanation using chemical equations.
The solubility of PbSO4 is affected by the pH of the solution, as the sulfate ion (SO4^-2) can act as a weak base and react with hydronium ions (H3O+) to form bisulfate ions (HSO4^-) and water. This reaction reduces the concentration of sulfate ions and shifts the equilibrium towards the dissolution of PbSO4. Understanding solubility equilibrium is important in many fields, including materials science, environmental chemistry, and biochemistry.
For more similar questions on topic Solubility Equilibrium.
https://brainly.com/question/23946616
#SPJ11
How do you control chemical exposure in the workplace?.
Answers
By changing process to minimize contact with hazardous chemicals. And Isolating or enclosing the process etc. We can control chemical exposure in the workplace.
Controlling exposures to chemical hazards and toxic substances is the fundamental method of protecting workers. A hierarchy of controls method is used as a means of determining how to implement feasible and effective controls.
The method use to control can be-
Change process to minimize contact with hazardous chemicals.
Isolate or enclose the process.
Use of wet methods to reduce generation of dusts or other particulates.
General dilution ventilation.
Use fume hoods.
To learn more about prevention to chemical hazards visit the link- https://brainly.com/question/19656792
#SPJ4
The equilibrium constant (K) for the reaction
2HCI(g) = H2(g) + Cl2(g)
is 4.17 x 10-34 at 25°C. What is the equilibrium constant for the reverse reaction at the same
temperature?
H2(g) + Cl2(g) = 2HCl(g)
Answers
Answer: The equilibrium constant for the reverse reaction at the same temperature is \(2.40 \times 10^{33}\).
Explanation:
The given reaction equation is as follows.
\(2HCl(g) \rightleftharpoons H_{2}(g) + Cl_{2}(g)\) ... (1)
It's equilibrium constant (K) value is \(4.17 \times 10^{-34}\).
Also, another reaction equation is as follows.
\(H_{2}(g) + Cl_{2}(g) \rightleftharpoons 2HCl(g)\)
This is the reverse of equation (1). Hence, its equilibrium value is calculated as follows.
\(K' = \frac{1}{K}\\= \frac{1}{4.17 \times 10^{-34}}\\= 2.40 \times 10^{33}\)
Thus, we can conclude that the equilibrium constant for the reverse reaction at the same temperature is \(2.40 \times 10^{33}\).
IWhich of the following solutions would be most likely to have the highest water concentration?
Multiple Choice hypertonic solution isotonic solution hypotonic solution water concentration and tonicity of a solution cannot be compared
Answers
"Hypotonic solution," refers to a solution with the highest water concentration due to its lower solute concentration compared to the other options, leading to water influx into cells.
A hypotonic solution would be most likely to have the highest water concentration. In a hypotonic solution, the solute concentration is lower than that inside the cell or compared to another solution. As a result, water tends to move into the cell or the solution to equalize the concentration.
When a cell is placed in a hypotonic solution, water molecules will move into the cell through the process of osmosis. This influx of water increases the water concentration inside the cell, leading to cell swelling or even bursting in extreme cases.
Compared to hypertonic and isotonic solutions, a hypotonic solution has a lower solute concentration, allowing for a higher concentration of water molecules. This results in a higher water concentration in the solution. It's important to note that the concept of tonicity is related to the relative solute concentrations between two solutions and their effect on cell osmosis. In this case, a hypotonic solution is characterized by a higher water concentration compared to the other options.
learn more about Hypotonic solution here:
https://brainly.com/question/28020628
#SPJ11
How many moles are in 3.45g of KCI ?
Answers
0.0463 mol KCl
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:Step 1: Define
3.45 g KCl
Step 2: Identify Conversions
Molar Mass of K - 39.10 g/mol
Molar Mass of Cl - 35.45 g/mol
Molar Mass of KCl - 39.10 + 35.45 = 74.55 g/mol
Step 3: Convert
Set up: \(\displaystyle 3.45 \ g \ KCl(\frac{1 \ mol \ KCl}{74.55 \ g \ KCl})\)Multiply/Divide: \(\displaystyle 0.046278 \ mol \ KCl\)Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
0.046278 mol KCl ≈ 0.0463 mol KCl
What makes a nucleus stable?
A. A nucleus is stable if all of the electrons are in the lowest energy
levels.
B. A nucleus is stable if there are fewer neutrons than protons in the
nucleus.
C. A nucleus is stable if the electrostatic and strong nuclear forces
balance out
D. A nucleus is stable if there is the same number of protons as
electrons.
SUB ցիկ
Answers
The stable nuclei can be identified if the count of proton and neutron are same then nuclei will be stable.
What is stable Nuclei?That kind of nuclei which posses identical number of proton and neutron as well can be referred as stable nuclei. For example: The isotope of carbon \(C^{12}\) has 6 proton and 6 neutron as well. Hence it might be considered as stable nuclei.
What is proton?A hydrogen atom's nucleus contains positively charged protons. Protons, electrons, as well as neutrons, make up an atom.
To know more about stable nuclei click here.
https://brainly.com/question/3066763.
#SPJ2
What does one mole of H2O correspond to?
A.
6.02 × 1023 molecules of H2O
B.
6.02 × 1023 atoms of H and 6.02 X 1023 atoms of O
C.
6.02 × 1023 atoms of O
D.
6.02 × 1023 atoms of H
E.
6.02 × 1023 × 2 atoms of H
Answers
Answer:
Its A
Explanation:
Just took the test and got a 100%
What characteristics would show that this cat and kitten are related? Support your answer by explaining two inherited characteristics.
(Related like they are family)
Answers
Answer:
Being young, kittens can also be called “cubs” although the name “kitten” is more commonly used. Most consider cats as kittens if they are still less than one year of age. However, some vets say that a kitten can already be considered a cat when it reaches eight or nine months.
Or could also use:
Specie and stripes
1. A cat and it’s litter can’t be related without the producer which in this case is the mother
2. The stripes shows that the two are related and yeah you can have to cats that have the same stripes but that’s not likely, every-time any two cats with stripes are put together the cats show similarities but that doesn’t tell us that their related. Every cat has similar stripes but there is something that’s always gonna be off with the stripes whether the stripes have the same color or the stripes have the same arrangement on the cat. Like people cats have similar traits but that doesn’t mean there related (ex: two blue eyed people, that’s doesn’t prove that their related in any type of way).
Explanation:
Answer:
Inherited characteristics that show that a cat and kitten are related include physical traits such as fur pattern and color, eye shape, and body type. Another example is behavioral traits such as playfulness and social behavior. These traits are passed down from parent to offspring through genes and provide evidence of a familial relationship.
Explanation:
be sure to answer all parts. write an equation in which hso4− reacts (with water) to form its conjugate base. (include the states of matter.)
Answers
The equation for the reaction between HSO₄⁻ and water to form its conjugate base, SO₄²⁻, can be written as follows: \(HSO_{4}^{-} (aq) + H_{2}O (l) \rightleftharpoons SO_{4} ^{2-} (aq) + H_{3} O^+ (aq)\)
In this equation, HSO₄⁻ acts as an acid as it donates a proton (H⁺) to water, which acts as a base to accept the proton. This results in the formation of the H₃O⁺ ion, also known as the hydronium ion, and the SO₄²⁻ ion, which is the conjugate base of HSO₄⁻.
The equilibrium in this reaction is reversible, which means that the reaction can occur in both forward and reverse directions. The extent to which the reaction occurs in each direction depends on the concentration of the reactants and products, as well as the temperature and pressure of the system.
In summary, the reaction between HSO₄⁻ and water to form its conjugate base SO₄²⁻ involves the transfer of a proton from HSO₄⁻ to water, resulting in the formation of the hydronium ion and the conjugate base.
To know more about reaction refer here:
https://brainly.com/question/27750684#
#SPJ11
Ethanolic fermentation is used in making beverages such as beer, wine, and pulque. It is carried out by yeast and ...
A) clostridium.
B) zymomonas.
C) leuconostoc.
D) lactobacillus.
E) propionibacterium.
Answers
The correct answer is B) zymomonas. Ethanolic fermentation, which is the process of converting sugars into ethanol (alcohol) and carbon dioxide by yeast, is commonly used in the production of beverages like beer, wine, and pulque.
While there are various microorganisms that can carry out fermentation, yeast is the primary organism involved in ethanolic fermentation.
Zymomonas is a type of bacteria that is known for its ability to perform ethanolic fermentation. It can efficiently convert sugars into ethanol and carbon dioxide, making it suitable for industrial applications such as the production of alcoholic beverages.
Clostridium, Leuconostoc, Lactobacillus, and Propionibacterium are other types of microorganisms, but they are not primarily involved in ethanolic fermentation. They may have different metabolic pathways or be associated with other fermentation processes, but they are not the main organisms responsible for the production of ethanol in the context of beverage production.
Learn more about microorganisms at
brainly.com/question/9004624
#SPJ4
Explain the reason for the sequence of addition of the ether solution employed at the beginning of the formation of the Grignard reagent in the experimental procedure above.
Answers
It helps Bromination of the Grignard reagent because it helps solvate and stabilize the reagent as it forms.
The very simple reason is that in ether, there is no acidic Hydrogen present on which the Grignard reagent RMgX can attack and get itself converted to R−H .
This reaction is treasured for its capacity to form carbon-carbon bonds. The Grignard reagents are formed from the response of an alkyl halide with magnesium metal in anhydrous ether. The carbon atom of the Grignard reagent can characteristic as both a sturdy base and a strong nucleophile.
Grignard reagents are used synthetically to form new carbon–carbon bonds. A Grignard reagent has a very polar carbon–magnesium bond wherein the carbon atom has a partial bad fee and the metallic a partial wonderful rate.
Learn more about Grignard reagent here:- https://brainly.com/question/23971610
#SPJ4
Of these elements, which has the largest atomic radius?
Ar
S
Cl
Answers
based on the calculations performed in this experiment, would the same mass of a solute with a significantly higher molar mass have a larger or smaller effect on the boiling point elevation?
Answers
Based on the calculations performed in this experiment, the same mass of a solute with a significantly higher molar mass would have a larger effect on the boiling point elevation. As a result, the same mass of a solute with a higher molar mass will have a greater effect on the boiling point elevation.
Boiling point elevation is a thermodynamic phenomenon that occurs when the boiling point of a solvent (a substance that dissolves a solute to create a solution) is increased by adding another substance, the solute, to it. When a solute is added to a solvent, it lowers the freezing point and raises the boiling point of the solvent, which is known as the boiling point elevation.The formula for boiling point elevation is: ∆Tb = Kbm
Here, ∆Tb is the boiling point elevation, Kb is the molal boiling point elevation constant, and m is the molality of the solution. To understand this, let us take an example: Suppose a solution containing 1.0 mol of sodium chloride (NaCl) is dissolved in 1.0 kg of water. The molality of the solution is 1.0 mol / 1.0 kg = 1.0 m. In addition, the Kb for water is 0.51 °C/molal, which means that the boiling point elevation is 0.51 °C when the molality of the solution is 1.0 mol/kg.So, the boiling point of the solution will be raised by 0.51 °C, which can be calculated using the above formula.Calculation performed in this experiment:Boiling point elevation = ΔTb = Kb . mTherefore, based on the above formula, the boiling point elevation is directly proportional to the molality of the solution, which, in turn, is directly proportional to the number of moles of solute in the solution. Furthermore, the number of moles of solute is proportional to the mass of the solute (in grams) divided by its molar mass (in grams/mol).So, if a solute with a significantly higher molar mass is added to the solvent, it will have a larger effect on the boiling point elevation. As a result, the same mass of a solute with a higher molar mass will have a greater effect on the boiling point elevation.
To know more about boiling point elevation visit:
https://brainly.com/question/30641033
#SPJ11
Ionic and Net Ionic equations for 2 - 4
Answers
The net ionic reaction for each of the reaction is
a) \(3Pb^{2+} + 6Cl^----- > 3PbCl{2}\)
b) \(3Sr^{2+} + 2PO_{4} ^{3-} ---- > Sr_{3}( PO_{4}) _{2}\)
c) \(2Ag^+ + 2I^- --- > 2AgI\)
d) \(Cu^+ + CO_{3} ^{2-} ----- > Cu_{2} CO_{3}\)
What is the net reaction equation?We have to note that if we talk about the net reaction equation, we can be able to talk about the final ionic reaction after we have removed the spectator ions. Note that when we speak of the spectator ions, we mean the ions that do not take part in the reaction.
In this case, we have been give the precipitate in each of the reactions and we can use the formula of the precipitate to be able to deduce the net ionic reaction that took place.
Learn more about ionic reaction:https://brainly.com/question/29556253
#SPJ1
01:08:31
C 0
If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas
law?
the molar amount of the gas
the partial pressure of the gas
the standard temperature and pressure
the molar mass
Answers
Answer:
The correct answer is (A) "the molar amount of the gas".
Explanation:
I got it correct on Edge.
why is OH on the outside of the lewis structure for methanol?
Answers
In the Lewis structure of methanol (CH3OH), the OH group is placed on the outside because it is an important functional group that influences the chemical properties and reactivity of the molecule.
The Lewis structure is a representation of a molecule that shows the arrangement of atoms and valence electrons. In methanol, carbon (C) is the central atom bonded to three hydrogen (H) atoms and one oxygen (O) atom. The oxygen atom forms a single bond with carbon and also has two lone pairs of electrons.
The placement of the OH group (hydroxyl group) on the outside of the Lewis structure is significant because it determines the chemical behavior of methanol. The OH group consists of an oxygen atom bonded to a hydrogen atom and represents the presence of an alcohol functional group.
In organic chemistry, functional groups are specific arrangements of atoms within a molecule that give rise to characteristic chemical reactions and properties. The presence and position of functional groups can greatly influence the behavior and reactivity of a compound. In the case of methanol, the hydroxyl group provides the molecule with its characteristic properties.
know more about valence electrons here:
https://brainly.com/question/371590
#SPJ8
What are most likely the values of the quantum numbers I and mI for an
electron in a 3p orbital?
A. I = 1, 2, 3; mI = -1/2, + 1/2
B. I = 3; mI = -1/2, + 1/2
C. I = 0, 1, 2, 3; mI = -1, 0, 1
D. I = 1; mI = -1, 0, 1
Answers
Answer:
I think its D
Not too sure
The quantum numbers denote the position of an electron in the orbital. The angular momentum quantum number (l) and magnetic quantum number (ml) of the 3p orbital is I = 1; mI = -1, 0, 1. Thus, option D is correct.
What are quantum numbers?The quantum numbers are conserved quantities used to describe the energy and the position of the electron in the atomic orbital. The azimuthal, principal, magnetic, and spin are the four quantum numbers.
The angular momentum quantum number (l) represents the orbital shape and depends on the principal quantum number, n. The magnetic quantum number (ml) represents the orientation.
If an electron is in a 3p orbital then,
n = 3
l = 1
ml = -1, 0, 1
Therefore, option D. 3p orbital contains I = 1; mI = -1, 0, 1.
Learn more about quantum numbers here:
https://brainly.com/question/16977590
#SPJ5
Reset the simulation by clicking the reload button at the bottom right corner of the screen. move the chemistry book down again so its surface touches the surface of the physics book. quickly move the chemistry book back and forth. what’s different when the motion is faster?
Answers
The temperature of the physics book increasing as the chemistry book slides across it is the difference when motion is faster.
Because the molecules have kinetic energy, molecular motion rises with rising temperature and decreases with falling temperature. At absolute zero, molecular motion comes to a complete standstill.
What is Temperature ?This is defined as the degree of hotness or coldness of a body and it increases when there is more friction.
When motion is faster, there is an increase in friction and increase in thermal(heat) energy which leads to increase in temperature.By increasing the temperature, the velocity of the particles is accelerated. In contrast, lowering the temperature slows down the motion of the particles until it eventually stops entirely at absolute zero (0 K). The particles will have kinetic energy since they are moving.Learn more about Temperature here:
https://brainly.com/question/26866637
#SPJ4
Answer:
The speed of the particles increases for both books, and the temperature of the physics book increases even more.
Explanation:
edmentum
Using standard reduction potentials from the ALEKS data tab, calculate the standard reaction free energy for the following redox reaction.
6Cl-(aq) + 2MnO4-(aq) + 4H2O(l) -> 3Cl2(g) + 2MnO2(s) + 8OH-(aq)
Answers
The approximate value for the standard reaction free energy of the given redox reaction is 87,057 J/mol.
To calculate the standard reaction free energy (ΔG°) for the given redox reaction, we need to use the standard reduction potentials (E°) for each half-reaction and apply the Nernst equation.
The half-reactions involved in the reaction are:
6Cl^-(aq) -> 3Cl\(_{2}\)(g) + 6e^-
2MnO\(_{4}\)^-(aq) + 16H^+(aq) + 10e^- -> 2MnO\(_{2}\)(s) + 8H\(_{2}\)O(l)
The standard reduction potentials for these half-reactions are:
E°(Cl\(_{2}\)/2Cl-) = +1.36 V
E°(MnO\(_{4}\)-/MnO\(_{2}\)) = +1.51 V
To calculate the overall ΔG°, we use the equation:
ΔG° = -nFΔE°
where ΔE° is the difference in standard reduction potentials between the two half-reactions, n is the number of electrons transferred, and F is the Faraday constant.
For the given reaction, 6 electrons are transferred, so:
ΔE° = E°(Cl\(_{2}\)/2Cl-) - E°(MnO\(_{4}\)-/MnO\(_{2}\)) = (+1.36 V) - (+1.51 V) = -0.15 V
Plugging the values into the equation:
ΔG° = -(6 mol)(96,485 C/mol)(-0.15 V) = 87,057 J/mol
Thus, the standard reaction free energy for the given redox reaction is approximately 87,057 J/mol.
You can learn more about Nernst equation at
https://brainly.com/question/15237843
#SPJ11
Please answer it!! Would appreciate a lot!!
Answers
Answer:
1 acid
2 neutralization
3 H+ , OH-
4 metal
5 alkali
In both trials, you started with the same amounts of nitrogen and oxygen atoms. In this situation, did the equilibrium amounts change depending on the direction of the reaction?
Answers
Answer:
No.
Explanation:
The equilibrium amounts relatively do not change depending on the reaction, whether you started with 8 moles of NO2 or 4 moles of NO2.
Why does oxygen have the uses it has? It would be great if somebody will respond to this question as fast as possible ;)
Answers
Answer:
So it can help the living thing survivi survive
Answer: Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things.
Explanation: We humans, along with many other creatures, need oxygen in the air we breathe to stay alive. Oxygen is generated during photosynthesis by plants and many types of microbes.
Why does fumaric acid have a higher boiling point than maleic acid, even though they both can form hydrogen bonds?
Answers
Answer:.
Explanation:
Design a synthesis of diphenylmethanol from starting materials containing 6 carbons or fewer and only C, H, and/or O in their structure.
Answers
Diphenylmethanol may be synthesized by a Grignard reaction between phenylmagnesium bromide and benzaldehyde as the staring material.
A Grignard reagent is an organometallic compound that is formed by reacting an alkyl or aryl halide with magnesium metal in anhydrous ether or THF (tetrahydrofuran) solvent.
To synthesize diphenylmethanol from a Grignard reaction between phenylmagnesium bromide and benzaldehyde, the following steps can be followed:
1. Start with benzaldehyde (\(\rm C_6H_5CHO\)) as the starting material.
2. React benzaldehyde with an excess of phenylmagnesium bromide \(\rm (C_6H_5MgBr)\) in anhydrous ether or THF (tetrahydrofuran) as a solvent. This will form the Grignard reagent, phenylmagnesium bromide \(\rm (C_6H_5MgBr)\).
3. After the addition of phenylmagnesium bromide, add water or dilute acid (such as hydrochloric acid) to the reaction mixture to hydrolyze the Grignard reagent. This will lead to the formation of diphenylmethanol.
4. Isolate and purify diphenylmethanol through techniques such as extraction, distillation, or recrystallization.
Therefore, overall reaction for the synthesis of diphenylmethanol using benzaldehyde as the staring material:
\(\rm Benzaldehyde + Phenylmagnesium bromide \rightarrow Diphenylmethanol\)
Learn more about Grignard reagent here:
https://brainly.com/question/31845163
#SPJ4
4. What coefficients do you need to balance the following equation?
CH4 + O2 + CO2 + H2O
O 1, 2, 1, 2
O 2, 1, 1, 1
O 1, 1, 1, 1
O 2, 1, 2, 2
Answers
Answer:
option first is the right answer
How plants adapt to temperature variation
Answers
Explanation: I found this answer from goggle
Predict the mass (in grams) of precipitate that will form if a solution containing 2.34 g of cesium hydroxide is added to a solution containing a large excess of tiso4?
Answers
The mass of precipitate formed if a solution containing 2.34 g of cesium hydroxide is added to a solution containing a large excess of tiso4 is 0.6387 g
Mass of CsOH = 2.34 g
Number of moles of CsOH = 149.9 g / mol
Molar mass of CsOH = Mass of CsOH / Number of moles of CsOH
= 2.34 / 149.9
Molar mass of CsOH is 0.0156 mol
Chemical reaction2 CsOH + TiSO4 → Ti(OH)2 + CsSO4
In this reaction 2 moles of CsOH gives 1 mole of Ti(OH)2
0.0156 mol of CsOH will produce, 0.0156 / 2 = 0.0078 mol
0.0156 mol of CsOH will produce 0.0078 mol of Ti(OH)2
Mass of Ti(OH)2 = Molar mass of Ti(OH)2 / Number of moles of Ti(OH)2
= 0.0078 * 81.88
= 0.6387 g
Mass of Ti(OH)2 formed is 0.6387 g
Learn more about mass of precipitate on
https://brainly.com/question/24893122
#SPJ4
The mass of precipitate formed is 0.90441 g
cesium hydroxide is added to a solution containing a large excess of TiSo4
The chemical reaction is
2CsOH + TiSo4 → Ti(OH)2 + CsSo4
The above reaction the Ti(OH)2 is a precipitate formed
Molar mass = mass of a substance / mass of one mole
Mass of CsOH = 2.34 / 149.912
Mass of CsOH = 0.0156 mol
The above reaction 2 mol of cesium hydroxide yield 1 mol of titanium hydroxide
Then, 0.0156 mol of CsOH yield 0.0156 / 2 = 0.0078 mol of Ti(OH)2
The mass of Ti(OH)2 is 115.95
0.0078 mol of Ti(OH)2 = 115.95 X 0.0078
= 0.90441
Hence, The mass of Ti(OH)2 = 0.9044 gLearn more about the mass of precipitate on
https://brainly.in/question/738992.
Which part of this system is most greatly impacted when human activities release excessive amounts of carbon dioxide and other greenhouse gases into the atmosphere?
Answers
When human activities release excessive amounts of carbon dioxide and other greenhouse gases into the atmosphere, then atmosphere is most greatly impacted.
What are greenhouse gases?Greenhouse gases are gases the in the atmosphere of Earth that trap heat.
The greenhouse gases trap heat in the atmosphere and contribute to the phenomenon of global warming, which has numerous negative effects on the climate and environment.
Excessive greenhouse gas emissions can cause rising global temperatures, more frequent and severe weather events, sea level rise, ocean acidification, and other environmental changes that have significant impacts on ecosystems, agriculture and human societies. Therefore, it is important to reduce greenhouse gas emissions to mitigate the impacts of the climate change.
To know more about greenhouse gases, refer
https://brainly.com/question/14507701
#SPJ9
9. A student was provided with only a thermometer, a stopwatch and a beaker. What could the student measure? A 10.5g solid and 24.8 cm³ liquid B 10.5g solid and 25°C C D 24.8 cm³ liquid and 45 seconds 25°℃ and 45 seconds
Answers
The student can measure 10.5g solid and 25°C using the given equipment (thermometer, stopwatch, and beaker). Option B.
Based on the given equipment (thermometer, stopwatch, and beaker), let's examine the options to determine what the student can measure:
A. 10.5g solid and 24.8 cm³ liquid: The student cannot directly measure the mass of a solid using a thermometer, stopwatch, and beaker. Measuring the volume of a liquid would require a graduated cylinder or a measuring pipette, which is not mentioned in the given equipment. Therefore, this option is not feasible.
B. 10.5g solid and 25°C: The student can measure the temperature of an object using the thermometer, and it is possible to measure the mass of a solid by weighing it. Therefore, this option is valid. The student can weigh the solid using the balance and measure the temperature of an object using the thermometer.
C. 24.8 cm³ liquid and 45 seconds: The student can measure the volume of a liquid using the beaker. However, the stopwatch is not suitable for measuring volume or time intervals in seconds. It is specifically used for measuring time. Therefore, this option is not valid.
D. 25°C and 45 seconds: The student can measure the temperature using the thermometer. Additionally, the stopwatch can accurately measure a time interval of 45 seconds. Therefore, this option is valid. Option B is correct.
For more such question on thermometer. visit :
https://brainly.com/question/2339046
#SPJ8
lab report solubility edge
Answers
Answer:
i'm attaching the report i made
Explanation:
(It does include the chart information)
hope this helps! have a wonderful day :)
The solubility of a solid solute increases with temperature.
What is the effect of temperature on the solubility of a solute?The solubility of a solute is the amount of solute that dissolves in a given volume of solvent at a particular temperature.
The solubility of a solute increases with increase in temperature.
Based on the lab results, it was seen that with increase in temperature, the mass of sugar that dissolves in water increases.
50 mL of water at 2 °C dissolved only 80 g of sugar whereas at 102 °C, 250 g of sugar dissolved.
Therefore, it can be concluded that solubility of a solute increases with temperature.
Learn more about solubility at: https://brainly.com/question/23946616