Answer:
the only difference i could find is that if your eating, your alive and if your a drain than your not.
Explanation:
HELP PLEASE!!!!!
What is the molarity of a solution prepared by dissolving 30.0 grams of NaOH in enough water to make a solution with a total volume of 2.40 liters? (5 points)
0.150 M NaOH
0.218 M NaOH
0.313 M NaOH
0.462 M NaOH
Answer:
0.313 M NaOH
Explanation:
Got it right on the test.
Taking into account the definition of molarity, the molarity of the solution is 0.313 M.
Definition of molarityMolar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
\(molarity=\frac{number of moles}{volume}\)
Molarity is expressed in units \(\frac{moles}{liter}\).
This caseIn this case, you know:
number of moles= 30 grams×\(\frac{1 mole}{40 grams}\)= 0.75 moles (being 40 \(\frac{grams}{mole}\) the molar mass of NaOH)volume= 2.40 LReplacing in the definition of molarity:
\(molarity=\frac{0.75 moles}{2.40 L}\)
Solving:
molarity= 0.313 M
Finally, the molarity of the solution is 0.313 M.
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what is a sulfhydryl group, and how does it interact biochemically with heavy metals? how does the interaction affect processes in the body?
A sulfhydryl group is a functional group (-SH) consisting of a sulfur atom bonded to a hydrogen atom. It can interact with heavy metals through a process called metal-thiolate coordination, and the interaction affect processes in the body through Enzyme Inhibition, and Protein Structure.
A sulfhydryl group, also known as a thiol group, is a functional group (-SH) consisting of a sulfur atom bonded to a hydrogen atom. It is commonly found in amino acids such as cysteine and methionine, as well as in coenzymes and enzymes.
In biochemistry, sulfhydryl groups can interact with heavy metals through a process called metal-thiolate coordination. Heavy metals, such as mercury, lead, cadmium, and arsenic, have a high affinity for sulfhydryl groups. They can bind to the sulfur atom of the thiol group, forming metal-thiolate complexes.
The interaction between sulfhydryl groups and heavy metals can have several effects on biological processes;
Enzyme Inhibition; Heavy metal binding to sulfhydryl groups in enzymes can lead to enzyme inhibition or loss of enzymatic activity. This interference can disrupt essential biochemical pathways and impair cellular functions.
Protein Structure and Function; Sulfhydryl groups play a crucial role in maintaining the structure and function of proteins through disulfide bonds. Heavy metal binding to sulfhydryl groups can disrupt disulfide bond formation or cause protein denaturation, affecting protein folding, stability, and activity.
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What is meant by the term isotopes?
Answer the following questions in complete sentences.
A. Identify club soda as an element, compound, or mixture.
B. Explain the classification of club soda identified in Part A.
Answer:
a) club soda is a compound
b) Club soda is a manufactured form of carbonated water, commonly used as a drink mixer. Sodium bicarbonate, potassium sulfate, potassium bicarbonate, potassium citrate, or sodium citrate is artificially added to replicate constituents commonly found in natural mineral waters
For the reaction
C2H2(g) + 3 O2(g) – 2 CO2(g) + 2 H2O(g)
What number of grams of CO2 could be produced from 2.0 g of C2H4 and 5.0 g of O2?
Answer:
3.3792 g
Explanation:
The balanced equation for the reaction is given as;
2 C2H2(g) + 3 O2(g) --> 2 CO2(g) + 2 H2O(g)
From the reaction;
2 mol of C2H2 requires 3 mol of O2
2.0 g of C2H2
Number of moles = Mass / Molar mass = 2 / 26.04 = 0.07680 mol
5.0 g of O2
Number of moles = Mass / Molar mass = 5 / 32 = 0.15625 mol
The limiting reactant is; C2H2
2 mol of C2H2 produces 2 mol of CO2
0.07680 mol produces x
Solving for x;
x = 0.07680 mol
Mass = Molar mass * Number of moles = 44 g/mol * 0.07680 mol = 3.3792 g
->>
16) Which of the following single-replacement reactions will result in NO REACTION?
A. Na(s) + Mg(NO3)2(aq)
B. Na(s) + Al(NO3)2(aq) ->
C. Na(s) + Cu(NO3)2(aq) ->>
D. Na(s) + Fe(NO3)2(aq) →>>
E. Na(s) + Ba(NO3)2(aq)
Price increases on goods in the economy signal producers to __________ production.
A.
stop
B.
increase
C.
decrease
D.
maintain
Answer:
C. decrease
Explanation:
Price increases on goods in the economy signal producers to decrease production.
Producers benefits more when the price of goods and services increases in the market. This makes them have more profit.
To maintain this profit level, they often decrease their production output to create a form of artificial scarcity within the market to sustain the price at which their goods trades.
If the producer increases the amount of goods they produce, this flux of goods can cause a decrease in price as the consumer is favored with a good bargaining power.Answer:
C
Explanation:
edge 2021
A 100.0ml sample of 0.100M methylamine(CH3NH2, kb=3.7x10-4) is titrated with 0.250M HNO3. Calculate the pH after the addition of each of the following volumes of acid. a) 0.0 ml b) 20.0 ml c) 40.0 ml d)60.0 ml
For the pH after the addition of each volume of acid, we need to consider the reaction between methylamine (CH₃NH₂) and HNO₃. Methylamine is a weak base, and HNO3 is a strong acid. The reaction can be written as:
CH₃NH₂ + HNO₃ -> CH₃NH₃+ + NO₃-
First, let's calculate the initial moles of methylamine in the 100.0 ml sample:
moles CH₃NH₂ = volume (L) * concentration (mol/L)
moles CH₃NH₂ = 0.100 L * 0.100 mol/L
moles CH₃NH₂ = 0.010 mol
Since CH₃NH₂ is a weak base, it will react with HNO₃ in a 1:1 ratio. Therefore, the number of moles of CH₃NH₂ reacting will be equal to the number of moles of HNO₃ added.
Now let's calculate the moles of HNO₃ added for each case:
a) 0.0 ml (no HNO₃ added): 0.010 mol
b) 20.0 ml: moles HNO₃ = 0.020 L * 0.250 mol/L = 0.005 mol
c) 40.0 ml: moles HNO₃ = 0.040 L * 0.250 mol/L = 0.010 mol
d) 60.0 ml: moles HNO₃ = 0.060 L * 0.250 mol/L = 0.015 mol
Now we need to calculate the moles of CH₃NH₂ and CH₃NH₃+ remaining after the reaction.
For case a) 0.0 ml:
moles CH₃NH₂ remaining = 0.010 mol - 0.000 mol = 0.010 mol
moles CH₃NH₃+ formed = 0.000 mol
For case b) 20.0 ml:
moles CH₃NH₂ remaining = 0.010 mol - 0.005 mol = 0.005 mol
moles CH₃NH₃+ formed = 0.005 mol
For case c) 40.0 ml:
moles CH₃NH₂ remaining = 0.010 mol - 0.010 mol = 0.000 mol
moles CH₃NH₃+ formed = 0.010 mol
For case d) 60.0 ml:
moles CH₃NH₂ remaining = 0.010 mol - 0.015 mol = -0.005 mol (Excess acid)
moles CH₃NH₃₊ formed = 0.015 mol
Since methylamine is a weak base, we need to consider the Kb value to calculate the concentration of hydroxide ions (OH-) and then convert it to pH.
The Kb expression for methylamine is:
Kb = [CH₃NH₃+][OH-] / [CH₃NH₂]
We can assume that [OH-] ≈ [CH₃NH₃+], so the equation becomes:
Kb = [OH-]^2 / [CH₃NH₂]
Rearranging the equation:
[OH-] = sqrt(Kb * [CH₃NH₂])
Now, let's calculate the OH- concentration and convert it to pH for each case:
a) 0.0 ml:
[OH-] = sqrt(3.7x10^-4 * 0.010 mol) ≈ 0.00608 M
pOH = -log10(0.00608) ≈ 2.22
pH = 14
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Express the sum of 7.68 m and 5.0 m using the correct number of significant digits. A)13m B)10m C)12.68m D)12.7m
Answer:
option c = 12.68m is the correct answer.
hope this answer will help you
what is the osmotic pressure (in torr) of a saturated solution of srf₂ at 25°c? the ksp for srf₂ at this temperature is 7.9 × 10⁻¹⁰.
Osmotic pressure of a saturated solution of SrF₂ at 25°C, is approximately 94.6 torr. The Osmotic pressure of a saturated solution of SrF₂ can be calculated by using Van't Hoff equation.
1. Write the balanced dissolution equation for SrF₂: SrF₂(s) ⇌ Sr²⁺(aq) + 2F⁻(aq)
2. Use the Ksp value to find the molar solubility (x) of SrF₂: Ksp = [Sr²⁺][F⁻]² = (x)(2x)² = 7.9 × 10⁻¹⁰
3. Solve for x: x = 1.62 × 10⁻³ M
4. Use the Van't Hoff equation to calculate osmotic pressure (Π): Π = iMRT, where i is the van't Hoff factor, M is the molarity, R is the gas constant (0.0821 L atm/mol K), and T is the temperature in Kelvin (25°C + 273.15 = 298.15 K)
5. Calculate the van't Hoff factor (i) for SrF₂: i = 1 + 2 = 3
6. Calculate osmotic pressure (Π): Π = (3)(1.62 × 10⁻³ M)(0.0821 L atm/mol K)(298.15 K)
7. Convert osmotic pressure to torr: 1 atm = 760 torr
8. Final osmotic pressure (Π) in torr: Π = 94.6 torr
The osmotic pressure of a saturated solution of SrF₂ at 25°C is approximately 94.6 torr.
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What is the maximum number of electrons in an atom that can have the following quantum numbers? Specify the orbitals in which the electrons would be found. (a) n = 2, ms = +1 2; (b) n = 4, mℓ = +1; (c) n = 3, ℓ = 2; (d) n = 2, ℓ = 0, ms = −1 2; (e) n = 4, ℓ = 3, mℓ = −2.
Answer:
1.04
Explanation:
Please help me on #2 giving BRAINLIEST!
Answer:
basic
Explanation:
because H is hydrogen
When a 125 g sample containing nitrogen and hydrogen is analyzed, 5.87 g of nitrogen are found. What is the percent composition of this mineral?
The percent composition of nitrogen and hydrogen in the sample is approximately 4.696% and 95.304%. To find the percent composition of nitrogen and hydrogen in the sample, we first need to determine the mass of hydrogen in the sample.
We know that the mass of the sample is 125 g and the mass of nitrogen is 5.87 g. Therefore, the mass of hydrogen can be calculated by subtracting the mass of nitrogen from the total mass of the sample:
Mass of hydrogen = Total mass of sample - Mass of nitrogen
Mass of hydrogen = 125 g - 5.87 g
Mass of hydrogen = 119.13 g
Now we can calculate the percent composition of nitrogen and hydrogen:
Percent composition of nitrogen = (Mass of nitrogen / Total mass of sample) x 100%
Percent composition of nitrogen = (5.87 g / 125 g) x 100%
Percent composition of nitrogen = 4.696%
Percent composition of hydrogen = (Mass of hydrogen / Total mass of sample) x 100%
Percent composition of hydrogen = (119.13 g / 125 g) x 100%
Percent composition of hydrogen = 95.304%
Therefore, the percent composition of nitrogen and hydrogen in the sample is approximately 4.696% and 95.304%, respectively.
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An unknown compound has an empirical formula of C2H3O and a molecular mass of 86 amu. -Draw a plausible structure for this compound that contains alcohol, ether, and alkyne functional groups.-Draw a plausible structure for this compound that contains aldehyde and ketone functional groups.
Based on the empirical formula of C2H3O, the molecular formula of the compound can be calculated using its molecular mass:
Molecular formula mass = (empirical formula mass) x n
where n is a positive integer that represents the number of empirical formula units in the molecule.
For this compound, the molecular formula mass is 86 amu, which is the same as the molecular mass given in the problem. Therefore, n = 1, and the molecular formula is also C2H3O.
Plausible structure with alcohol, ether, and alkyne functional groups:
One possible structure for this compound that contains an alcohol, ether, and alkyne functional groups is propargyl alcohol.
H C≡C─CH2─OH
│
O
This compound has the empirical formula C2H3O and a molecular mass of 56 amu. To get the molecular mass of 86 amu, we can add a methyl group (CH3) to the propargyl alcohol molecule:
H C≡C─CH2─O─CH3
│
O
Plausible structure with aldehyde and ketone functional groups:
Another possible structure for this compound that contains an aldehyde and ketone functional groups is propanal acetone.
H
│
O═C─CH2─CH3
│
O
│
CH3
This compound has the empirical formula C2H3O and a molecular mass of 86 amu.
What is an empirical formula?
The empirical formula of a chemical compound is the simplest ratio of whole number atoms of each element present in the compound. It gives the relative number of atoms of each element in a compound, but it does not indicate the actual number of atoms in the molecule. The empirical formula is determined from the mass percent composition of the compound.To know more about empirical formula, click the link given below:
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A sealed gas syringe which can move freely contains 60 cm³ of air.Thd atmospheric pressure is 101 kPa.What is the pressure of the enclosed gas?
All the simple machines make work easier to do by changing the _____ or _____ of a force. A. size; type B. work; type C. size; direction D. type; direction
Answer:
C. size; direction
Explanation:
By definition, a machine is referred to any device that makes work easier. It takes force to do work, hence, work refers to the application of force over a particular distance. A machine aims at making the work easy by changing how it is done. Simple machines, which include: levers, pulleys, inclined planes etc. all carry out the same thing, which is to make work easier, by changing the size/magnitude and direction of the applied force.
A simple machine tends to change the size of the inputted force by increasing it over a shorter distance. The machine increases the force applied better than it can be done manually e.g. a plier and nutcracker increases/changes the applied force better than it can be done with bare hands.
Also, a simple machine can achieve making work easier by changing the direction at which the force is applied. The machine applies the force on the object in an opposite direction or contrary to the way it was manually applied.
Which of these does not always have a double bond? a. amine b. aldehyde c. ketone d. alkene e. carboxylic acid
Amine does not always have a double bond.
What is Amine?Formally, amines are ammonia (NH3) derivatives in which one or more hydrogen atoms have been replaced by a substituent, such as an alkyl or aryl group these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines.In addition to medicines and treatments, amines are used to create nylon and azo-dyes. They are frequently employed in the creation of compounds for the filtration of water, medicinal, and crop protection. They are also utilized in personal care products.Amino acids, trimethylamine, and aniline are typical examples of amines. Amidates are another name for inorganic ammonia compounds like monochloramine (NClH2). Hormones, vitamins, proteins, and other substances all include amines by nature.Learn more about amine here:
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Kenny made a batch of bread dough and divided it into two balls of equal size. He measured the sizes of the dough balls and placed one in an 80°F warming cabinet and the other in a 60°F warming cabinet. The cabinets each had 75 percent humidity. Kenny let the dough expand in the warming cabinets for two hours. Leaving the dough on the pan, he then measured the sizes of the dough balls and calculated how much the dough had expanded. Kenny repeated this process with nine more batches of bread dough, alternating which warming cabinet was set to 80°F and which was set to 60°F.
Answer:i think it is 350°F
Explanation:
Blood is a tissue. Blood contains red blood cells and white blood cells. Name
two other components of blood.
Answer:
It has four main components: plasma, red blood cells, white blood cells, and platelets.
Answer:
Two orher components of blood are plasma and platelets.
How many moles of aluminum are in 54 grams
what are the advantages of the SI system?
Select all that apply.
1.It is easy to change from one unit to another.
2.It allows scientists to compare experimental results.
3.It is based on inches and pounds.
4.All its units are based on the number 100
Answer:
I believe the correct answers are 1 and 2
Which is most likely true about electronegativity?
Answer:
it intends to increase to be the same across a period
It was found that 2.35 g of a compound of phosphorus and chlorine contained 0.539 g of phosphorus. What are the percentages by mass of phosphorus and chlorine in this compound?
Answer:
Explanation:
P = 2.35g
Cl= 0.539 g
% MASS = mass of X/ mass of a compound
% mass of P = 2.35 / (2.35+ 0.539) = 81.34%
% mass of Cl = 0.539 /(2.35+ 0.539) = 18.66 %
Answer:
what the person above me said
Explanation:
List 3 things you notice about the ingredients and recipes
Answer:
refer to attachment OK sir
Acme Chemical Consultants, a general partnership, discharges from its facility a pollutant prohibited by the Environmental Protection Agency (EPA). In this case, _____.
Multiple Choice
only the partners who ordered the discharge are personally liable
all partners will be imprisoned, as the violation of an EPA standard is a crime per se
the firm is liable for the resulting fines
the general partners are personally liable unless the firm has inadequate assets
As a general partnership, Acme Chemical Consultants is considered a legal entity separate from its individual partners. general partnership does not provide limited liability protection to its partners.
The partners of Acme Chemical Consultants can be held personally liable for the actions and obligations of the partnership. When the partnership discharges a pollutant prohibited by the EPA, the firm, as a legal entity, will be held responsible for the violation. The EPA has the authority to impose fines and penalties on Acme Chemical Consultants for its actions. The fines levied by the EPA would typically be imposed on the partnership itself, rather than the individual partners.
It is important to note that while the firm is primarily liable for the resulting fine, in certain circumstances, the partners of Acme Chemical Consultants may still be held personally liable if the firm does not have adequate assets to cover the fines. Personal liability of the partners would generally come into play if the partnership is unable to satisfy the imposed fines and the partners are deemed responsible for paying the remaining amount from their personal assets.
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How can erosion on a floodplain be reduced?? Help!!
A large drainage canal contained a number of little check dams that prevented erosion in older, higher-lying areas.
Briefing:A check dam is a tiny structure built over a drainage ditch to slow down water flow and prevent erosion. In first-developed areas, check dams and wide grassy slopes prevent erosion.
What kind of erosion results from a large floodplain?Water erodes curves on the outside and deposits eroded material on the interior, creating meanders. The positions of the curves change throughout time. A floodplain is produced as meanders erode in different directions. On both sides of a river, there is a large, flat region.
What causes erosion of floodplains?Floodplain erosion has been made worse by the clearing of catchments for urban and agricultural development for two reasons: first, due to changes in surface and groundwater discharge, and second, due to loss of soil strength.
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a helium gas balloon has a volume of 1 m3 and a gas pressure of 1.2 atm. when it is high in the sky, the volume increases to 2 m3. assuming the gas temperature does not change and there is no gas leakage, the gas pressu
Using the ideal gas law equation, the gas pressure of helium becomes 0.6atm when the volume increases to 2\(m^3\).
The general gas equation, often known as the ideal gas law, is the equation of state for a fictitious ideal gas. Although it has several restrictions, it is a decent approximation of the behaviour of numerous gases under various circumstances.
According to the ideal gas law, all gases have an equal number of molecules in an equal volume at a given temperature and pressure.
Ideal gas law:
PV = nRT
where,
P – Pressure
V – Volume
n – No. of moles
R – Gas constant
T - Time
Given:
V1 = 1\(m^3\)
P1 = 1.2atm
V2 = 2\(m^3\)
To find:
P2 = ?
Formula:
PV = nRT
Calculations:
PV/T = constant
P1V1/T1 = P2V2/T2
Since T1 = T2,
P1V1 = P2V2
1.2 x 1 = P2 x 2
P2 = 1.2 x 1 / 2
P2 = 0.6atm
Result:
The gas pressure of helium becomes 0.6atm when the balloon rises high and the volume increases to 2\(m^3\).
The complete question is:
a helium gas balloon has a volume of 1\(m^3\) and a gas pressure of 1.2atm. when it is high in the sky, the volume increases to 2\(m^3\). assuming the gas temperature does not change and there is no gas leakage, the gas pressure becomes _____atm.
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How many grams are in 2.0 x 10-5 moles of uranium?
Answer choices
5.3 x 10-3 grams
4.8 x 10-3 grams
1.4 x 10-3 grams
2.2 x 10-3 grams
The mass of 2.0 x 10-5 moles of uranium is 4.8 x 10-3 grams.
What is molar mass?The molar mass of a substance is the mass of 1 mole of the substance.
The molar mass of uranium is 238 g.
This is the mass of 1 mole of uranium.
The mass of 2.0 x 10-5 moles of uranium = 238 g × 2.0 x 10-5
The mass of 2.0 x 10-5 moles of uranium = 0.00476 g = 4.8 x 10-3 grams
Therefore, the mass of 2.0 x 10-5 moles of uranium is 4.8 x 10-3 grams.
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HELP PLSSS ASAP!! IF ANYONE KNOWS
Answer:
D
Explanation:
because reduction is gain of electron so Cl- gained one electron hope this make sense :)
If you had carried out simple distillation after the azeotropic distillation, what would you be separating the major product form?
If simple distillation was carried out after the azeotropic distillation, the major product that would be separated is the pure component of the mixture.
Simple distillation is a process that is commonly used to separate a mixture of liquids based on the differences in their boiling points. During the process, the mixture is heated, and the component with the lowest boiling point will vaporize first, leaving behind the component with the higher boiling point.
In the case of azeotropic distillation, the process involves the addition of a third component that forms an azeotrope with the two main components of the mixture. This azeotrope has a boiling point lower than that of the individual components, making it difficult to separate them using simple distillation. However, by performing azeotropic distillation first, it is possible to break down the azeotrope and obtain a higher purity of the individual components.
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