Consider the chemical equation in equilibrium. 2H2(g) O2(g) Double headed arrow. 2H2O(g) What will happen if the pressure of the system is increased? The reaction will not change. The reverse reaction will be favored. The reaction will stop completely. The forward reaction will be favored.
Answers
The increase in pressure of the system results in the reverse reaction. Thus, option C is correct.
The balanced chemical equation for the reaction is given as:
\(\rm 2\;H_2\;+\;O_2\;\leftrightharpoons \;2\;H_2O\)
The pressure is the force applied by the molecules in the mixture and to the wall of the container. The increase in the pressure results in the increased collision of the molecules.
The increase in collisions results in the degradation of the product molecules. Thus, the reaction will process towards the left in the reverse direction
The increase in pressure of the system results in the reverse reaction. Thus, option C is correct.
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Answer: Its not C!!!
Explanation:
Related Questions
please help me with this
Answers
The reactants in the given reaction are methanol and oxygen gas while the products are carbon dioxide and water.
The sum of the mass of the reactants is equal to the sum of the mass of the products.
What is the sum of the masses of the products and reactant in the combustion of methanol?The sum of the masses of the products and reactants in the combustion of methanol is derived from the molar masses and the balanced equation of the reaction.
The balanced equation of the reaction is given below:
2 CH₃OH (l) + 3 O₂ (g) → 2 CO₂ (g) + 4 H₂O (g)
Molar mass of CH₃OH = 32 g
Molar mass of O₂ = 32
Molar mass of CO₂ = 44 g
Molar mass of H₂O = 18 g
Mass of reactants = 2 * 32 + 3 * 32
Mass of reactants = 160 g
Mass of products = 2 * 44 + 4 * 18
Mass of products = 160 g
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Density is
A the same as the object's weight.
B the volume divided by the mass (D = v/m).
C the amount of matter that occupies a given amount of space.
D the same as the size of the object.
Answers
How many joules of heat are needed to raise the temperature of 15.0 g of
iron from 11°C to 66°C, if the specific heat of iron is 0.45 J/g°C?
Answers
371.25 joules of heat energy are needed to raise the temperature of 15.0 g of iron from 11°C to 66°C.
To solve this problemThe following formula can be used to determine the amount of heat energy needed to raise a substance's temperature:
Q = m * c * ΔT
Where
The heat energy in joules is QThe substance's mass, m, is expressed in gramsc is a substance's specific heat capacity expressed in J/g°CΔT is the change in temperature in degrees CelsiusGiven the following values:
m = 15.0 g (mass of iron)
c = 0.45 J/g°C (specific heat of iron)
ΔT = 66°C - 11°C = 55°C (change in temperature)
Plugging these values into the formula, we can calculate the heat energy (Q):
Q = 15.0 g * 0.45 J/g°C * 55°C
Q = 371.25 J
Therefore, 371.25 joules of heat energy are needed to raise the temperature of 15.0 g of iron from 11°C to 66°C.
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If Pulley A is 34% efficient and Pulley B is 85% efficient, what can we conclude? Which pulley would you rather use to lift a cement block?
Explain! This is science!!!
Answers
Answer:
I will use pulley b
Explanation:
because the pulley with more efficency can carry out the work better
What is the three-dimensional shape of the molecule with this Lewis structure? A. Bent B. Linear C. Tetrahedral D. Trigonal planar.
Answers
Lewis structure is the electron dot representation of the atomic and molecular bonds of the molecules. Trigonal planar is the shape of the formaldehyde.
What is a trigonal planar shape?A trigonal planar shape of the molecule is the arrangement of the central atom attached to the other three atoms making them look triangle-shaped.
The attachment of the carbon to the two hydrogens and one oxygen atom can be given by the VSEPR theory. The number of the electron pair in the molecule is 3 making them \(\rm sp_{2}\) hybridized and hence have a trigonal planar shape.
Therefore, option D. trigonal planar is the shape.
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which scientist made the most important discovery concerning indemnifying the sun as a star
Answers
Answer: Isaac Newton
Isaac Newton, an English scientist, lived from 1642 to 1727. In 1665 he realized that it was gravity that held the solar system together.
Explanation:
BUT YOULL NEVER BE ALONEEEE
ILL BE WITH YOU FROM DUSK UNTIL DAWWWNNNNN
ILL BE WITH YOU FROM DUSK TILL DAWN
ILL HOLD U WHEN THINGS GO WRONG
ILL BE WITH U FROM DUSK TIL DAWN
ILL BE WITH U FROM DUSK TIL DAWNNNNN
True or false? Metal ions and hydrogen ions both have the same type of charge.
Answers
Answer: Its true, mental ions and hydrogen ion both have the same type of charge.
Answer:
TRUE, Metal ions, and hydrogen ions both have the same type of charge. Explanation: Metal atoms lose one or more electrons at their maximum energy level and improve positively charged ions. A hydrogen ion is created when a hydrogen atom loses electrons and then becomes positively charged (charge +1).
A 21.3 g sample of nitrogen, n2 , has a volume of 50.0 l and a pressure of 700. mmhg
Answers
The molar mass of nitrogen (N2) can be calculated by dividing the given sample mass (21.3 g) by the number of moles (n), which can be determined using the ideal gas law equation.
To find the molar mass of nitrogen (N2), we need to determine the number of moles of N2 in the given sample. The ideal gas law equation, PV = nRT, relates the pressure (P), volume (V), number of moles (n), gas constant (R), and temperature (T). In this case, we are given the volume (50.0 L) and pressure (700 mmHg) of the nitrogen sample.
First, we need to convert the pressure from mmHg to atm by dividing it by 760 mmHg/atm. This gives us a pressure of 0.921 atm. Next, we rearrange the ideal gas law equation to solve for the number of moles (n) using the formula n = PV/RT.
We can assume that the temperature is constant at room temperature (typically around 25°C or 298 K) and use the value of the ideal gas constant (R = 0.0821 L·atm/(mol·K)). Plugging in the values, we have n = (0.921 atm * 50.0 L) / (0.0821 L·atm/(mol·K) * 298 K). Calculating this expression gives us the number of moles of nitrogen.
Finally, we can calculate the molar mass of nitrogen (N2) by dividing the given sample mass (21.3 g) by the number of moles. This gives us the molar mass of nitrogen.
In summary, the molar mass of nitrogen (N2) can be calculated by dividing the given sample mass by the number of moles, which can be determined using the ideal gas law equation.
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Write the chemical equation for the ionization of water. ionization of water:
Answers
The ions are produced by the water self-ionization reaction, which applies to pure water and any aqueous solution: H2O + H2O ⇌ H3O+ + OH.
calculate the standard entropy of reaction at 298 k for the reaction hg(liq) cl2(g) → hgcl2(s) the standard molar entropies of the species at that temperature are: sºm (hg,liq)
Answers
The standard entropy of reaction (∆Sº) can be calculated using the formula:
∆Sº = ΣnSº(products) - ΣnSº(reactants)
Where n is the stoichiometric coefficient and Sº is the standard molar entropy. Given the reaction: Hg(liquid) + Cl2(g) → HgCl2(s), the stoichiometric coefficients are 1 for Hg(liquid), 1 for Cl2(g), and 1 for HgCl2(s). The standard molar entropy values at 298 K are: Sº(Hg,liquid) = 76.0 J/mol·K, Sº(Cl2,g)
= 223.0 J/mol·K, and Sº(HgCl2,s)
= 154.2 J/mol·K. Plugging these values into the formula, we have:
∆Sº = (1 × 154.2) - (1 × 76.0 + 1 × 223.0)
∆Sº = 154.2 - 76.0 - 223.0
= -144.8 J/mol·K
Therefore, the standard entropy of reaction at 298 K for the given reaction is -144.8 J/mol·K.
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acrylonitrile (c3h3n, 53.07 g/mol) can be produced from propylene (c3h6, 42.09 g/mol) according to the reaction shown. in a particular experiment, 180 g c3h6 reacts with 125 g no (30.01 g/mol) and 105 g c3h3n is produced. what is the percent yield for the reaction?
Answers
The percent yield for the reaction is 99.79%.
The balanced equation for the reaction is:
C₃H₆ + HNO → C₃H₃N + H₂O
We need to find the theoretical yield of C₃H₃N first:
1 mole of C₃H₆ produces 1 mole of C₃H₃N
Moles of C₃H₆ = 180 g / 42.09 g/mol = 4.28 mol
Moles of C₃H₃N = 105 g / 53.07 g/mol = 1.98 mol
Therefore, C₃H₃N is the limiting reactant, and the theoretical yield is 1.98 mol.
To calculate the percent yield, we need to divide the actual yield by the theoretical yield and multiply by 100:
Percent yield = (actual yield / theoretical yield) x 100
Actual yield = 105 g
Theoretical yield = 1.98 mol x 53.07 g/mol = 105.22 g
Percent yield = (105 g / 105.22 g) x 100 = 99.79%
Therefore, the percent yield of the reaction is approximately 99.79%.
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Compare and contrast the daughter cells of mitosis and meiosis.
Answers
Answer:
For the most part, in mitosis, diploid cells are partitioned into two new diploid cells, while in meiosis, diploid cells are partitioned into four new haploid cells.The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred.
Explanation:
What type of model does the information below represent
Answers
The type of model represented by the information given in the image is a mathematical model (option C).
What is a model?A model is a simplified representation used to explain the workings of a real world system or event.
The following are the types of model there are;
Mathematical model; which usually describes a system by a set of variables and a set of equations that establish relationships between the variables. The particle theory of matter is a model that describes the arrangement and movement of particles in a substance. Analogy models are such that shows relationship or resemblance of objects.Based on the equation given above, the type of model illustrated is a mathematical model.
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Question 3
Which is the simplest form of a crystalline solid?
Answers
Answer:
metals is the simplest form of crystalline solid
Question 6
6.7 pts
A solution has a very high electrical conductivity, turns litmus paper red and has a pH of 2.0. This is most likely
a(n)
Base/Strong Electrolyte
Acid/Weak Electrolyte
Acid/Strong Electrolyte
Base/Weak Electrolyte
Next
« Previous
Answers
Answer:
Acid/String Electrolyte
Explanation:
Litmus paper turning red means it is an acidic solution. A pH of more than 7 is Base while pH of less than 7 is an acid. Since the pH is 2, less than 7, it s is an acid. Since it has a high electrical conductivity, it must be a strong Electrolyte.
How many molecules are contained in 1.55 moles of methane, CH 4 ?
Answers
Avogadro's law states that in one mole of a substance, there are \(6.022 \times 10^{23}\) molecules.
This means that in 1.55 moles, there are \(1.55(6.022 \times 10^{23})=\boxed{9.33 \times 10^{23} \text{( to 3 sf)}}\)
Determine the number of moles in a container of gas at ST with a volume of 99.2 L.
Answers
The approximately 4 moles of gas in the container at standard temperature (ST) with a volume of 99.2 L.
To determine the number of moles of gas in a container at standard temperature (ST) with a volume of 99.2 L, we need to use the ideal gas law equation:
PV = nRT
Where:
P = pressure (atmospheres)
V = volume (liters)
n = number of moles
R = ideal gas constant (0.0821 L·atm/mol·K)
T = temperature (Kelvin)
At standard temperature (ST), the temperature is 273.15 K.
Assuming the pressure is also at standard conditions (1 atm), we can rearrange the ideal gas law equation to solve for the number of moles:
n = PV / RT
Substituting the given values:
P = 1 atm
V = 99.2 L
R = 0.0821 L·atm/mol·K
T = 273.15 K
n = (1 atm) × (99.2 L) / ((0.0821 L·atm/mol·K) × (273.15 K))
Simplifying the calculation:
n ≈ 4 moles
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when a large amount of glucose is present benedicts turns
Answers
Answer: When glucose is mixed with Benedict's reagent and heated, a reduction reaction causes the Benedict's reagent to change color. The color varies from green to dark red (brick) or rusty-brown, depending on the amount of and type of sugar. Glucose never gives violet colour precipitate with Benedict's solution.
Explanation:
Which of the following would DECREASE the rate of a reaction?
1. add a catalyst
2. increase the concentration
3. increase the volume
4. increase the pressure
Answers
Answer: increasing volume
Explanation: adding a catalyst would increase reaction time and increasing INCREASING concentration definently makes reaction time alot faster increasing pressure actually makes it more concentrated, so no it is not
1.2.5 Practice: Chemistry in the World Chemistry Sem 1 Points Possible:25
Question 2: Scientists Observe Patterns and Rules
Observations of the physical world lead to the discovery of patterns. Understanding patterns leads to the discovery of rules. Understanding rules leads to the discovery of how the physical world works.
a. Patterns in nature involve anything that happens over and over again. A pattern could repeat itself at a specific time of day, time of the month, or time of year. Describe one of these kinds of patterns. (Example: A full moon occurs every 28 days.) (1 point)
b. What rule does the pattern you picked above point to? (Example: The appearance of a full moon every 28 days means that the moon orbits the Earth every 28 days.) (1 point)
Question 3: The Scientific Method
a. The Question:
In 1988, three gray whales were trapped in Arctic ice. Television crews captured the frantic attempts of hundreds of people to save the whales. Eventually, a Soviet icebreaker and U.S. National Guard helicopters arrived to help free the whales. The cost of the rescue mission exceeded $5 million.
i. Write a scientific question related to the whale story. (1 point)
ii. Write a nonscientific question related to the whale story. (1 point)
b. The Hypothesis:
Your little sister asks you a scientific question: "Does chocolate milk come from brown cows?" In order to answer the question, you decide to form a hypothesis.
Explain whether or not the following statements are effective hypotheses.
i. Brown cows produce chocolate milk. (1 point)
ii. Brown cows never produce chocolate milk. (1 point)
iii. Brown cows produce white milk. (1 point)
c. The Experiment:
i. A student conducts an experiment to determine whether adding salt causes water to boil more quickly. The student plans to heat two pots of water and measure how long they take to boil. One pot has salt in it and the other does not. The pot of water with salt added is the experimental group. The pot of water without salt is the control group. For the boiling saltwater experiment described, list three things that would make the control group ineffective. (1 point)
•.
•.
•.
ii. How might data for this experiment be organized to help look for patterns? (1 point)
iii. Why is peer review important? (1 point)
Question 4: History of Chemistry
a. How did Aristotle's idea of matter differ from that of scientists? (1 point)
b. Why wasn't alchemy considered a "real" science? (1 point)
c. Why is modern chemistry considered scientific? (1 point)
Question 5: Chemicals in Our World
a. A sign above a supermarket display of oranges reads:
Organic Produce
No chemicals were used to harvest this fruit!
How accurate is this claim? Why or why not? (1 point)
b. Name one way chemicals can help the environment. (1 point)
c. Name one way chemicals can hurt the environment. (1 point)
Question 6: Chemicals and Safety
a. Name a chemical or product that was once considered safe but is now considered harmful. (1 point)
b. Name a chemical that is safe to use in food in small amounts. (1 point)
c. Why do chemists routinely test existing chemicals? (1 point)
Question 7: The Scientist and Society
a. How do ethical guidelines make science safer? (1 point)
b. How does government funding affect scientific progress? (1 point)
c. In what way do scientists help the government do its work? (1 point)
d. What obligations do scientists have to society? (1 point)
Answers
One way chemicals can help the environment is by using synthetic pesticides and fertilizers to increase crop yields while minimizing water usage. This helps to reduce the land area needed for farming, which in turn reduces deforestation. It also decreases the need to clear additional land for cultivation, which reduces greenhouse gas emissions and helps to prevent soil erosion. Additionally, some chemicals can be used to clean up contaminated soil and water sources, such as in the case of oil spills or industrial pollution.
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state two importance of soil air to plants
Answers
Answer:
Soil contains minerals such as Iron, Zinc, Nitrogen compounds, etc. that are all essential to sustaining life. It also holds water and makes it available for plants to use. Soil also contains ores from which we can extract metals such as iron, copper, gold, and aluminum.
(Hope this helps) Sky
What is the name of this molecule?
O A. Butane
O B. Propane
O C. Propene
O D. Butene
Answers
The molecule represented below is Butane.
Important things to know about Butane Butane is an organic compound consisting of 4 carbon atoms. it is also a straight chain alkane with unsaturated bonds.its molecular formulae is C4H10.Can be used as a refrigerant.looking at the structure give each point represents a carbon atom, placing a C on each point gives you a total of 4, making it to be butane.See picture attached for a vivid illustration of butane.
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Answer:
Butane
Explanation:
i just took tha test
The scientific study of interactions among organisms and between organisms and their environment is _________________.
A: biosphere
B: ecology
C: trophic level
D: community
Answers
Answer:
ecology
Explanation:
Ecology is the study of the interactions between organisms and their environment (biotic and abiotic) •
Answer:
ecology
Explanation:
Ecology is the study of the interactions between organisms and their environment
2 Points
What charge would an ion have if it had more electrons than protons?
A. It would be neutral, since electrons would be outside the nucleus.
B. It would have no charge.
C. It would have a net negative charge.
D. It would have a net positive charge.
SUBMIT
Answers
Answer: C, negative
Explanation: Electrons give a negative charge, so having more electrons then postiivley charged protons would result in a negative charge.
what is democracy??????
Answers
Answer:
Democracy is a form of government in which the rulers are elected by the people
democracy is the type of Administration it is an ideal Political situation democracy is an only the rule of majority but a way of finilise who will rule the nation and what will the aim of Administration while deafening democracy Abraham Lincoln that democracy is the Government of the people for the people and by the people is more clear term democracy means and any station via a common people choose a representative from among himself elect him and he rules according to interest of the majority democracy out of all the form of government is rated best because every citizen play an important part in the formation of government •
DEMOCRACY AND CITIZENSideal democracy is possible only when the citizen are consious of the right and duties that citizens will be able to take correct the season when they are aware of the happening in their Area on Nation therefore they should try to get the information through various medium like newspaper radio television public meeting itzy in a democracy all the people should be literate and well-informed so they can make use voting rights correctly correctly•
the citizens have the right to crictise the working of government they have the right to oppose the anti people policy of government the type of democracy in which people elect their representatives to form government is known as representative democracy
the temperature of gas is raised by 100 deggres to 200 deggres. what happens to the volume of the gas
Answers
Answer:
Increases by 100 Pa
Explanation:
According to The Ideal Gas Equation,
the temperature of the gas is directly proportional to the volume of the gas present in itIf the temperature rises from 100 K to 200 K, then the volume will increase by 100 Pa (standard unit of Pressure)do girls or boys have faster reaction times?
Answers
Answer:
boys have faster reaction than girls
Explanation:
that because the Y chromosome do not have the greater ability to resist reaction while the X does
Which set of approximate bond angles at C1, C2, and C3 of the following molecule indicates the correct shape? C3 C2 C1 NFC-CH=CH2 Select one: a. C1 180, C2 120, C3 109.5 b. C1 180, C2 120, C3 120 c. C1 120, C2 120, C3 120 d. C1 120, C2 120, C3 180
Answers
The correct set of approximate bond angles at C1, C2, and C3 of the molecule "NFC-CH=CH2" is: a. C1 180, C2 120, C3 109.5.
This molecule is a linear alkene, where the double bond (C=C) is located between C2 and C3. The bond angles reflect the shape of the molecule, which is linear. The C1 atom is bonded to two other carbons and forms a 180-degree bond angle with them, indicating a straight line. The C2 and C3 atoms, which are bonded to a carbon and a double bond, form 120-degree bond angles with each other and the neighboring carbons, again indicating a straight line. The bond angle between the two double bonded carbons (C2-C3) is slightly less than the ideal value of 120 degrees due to the pi bond between them, which pushes the atoms slightly apart. The correct set of approximate bond angles at C1, C2, and C3 of the molecule "NFC-CH=CH2" is: a. C1 180, C2 120, C3 109.5.
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help this is for my cousin lol
Answers
Answer:
For camouflage, to blend in with their surroundings.
Explanation:
The solid, golden brown fur coat of the lion acts as camouflage and helps it hide to catch its prey, in low-lying grasses of the African savanna.
Which of the following represents the velocity of a light wave?
O A. E = fx2
O B. c = hxf
O C. E = hxf
O D. c = fx2
Answers
Answer:
D. c = fλExplanation:
c = fλ
where" c "is the speed of light ,
• "f" is the frequency of the electromagnetic waves,
• " λ" is its wavelength.
The term that represents the velocity of a light wave is c = fx2. The correct option is D.
What is velocity?Velocity is the speed by which an object moves or do any motion. When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time.
Light waves are the movement of waves in a direction. There are two types of transverse and electromagnetic. They are divided on the way of their movement.
The velocity of the light wave is the speed at which the light wave moves in a specific direction in time. The formula is given below:
c = fλ
Where c is the speed of light.
f is the frequency of the electromagnetic waves,
λ is its wavelength.
Thus, the correct option is D. c = fx2.
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