CHEMISTRY HIGH SCHOOL

Given the reaction: S(s)+ O2(g)- SO2(g)+ energy which diagram best represents the potential energy changes for this reaction

Answers

Answer 1
Answer: Its graph 1 I just took the test :)
Answer 2
Answer:

In an exothermic energy diagram, the reactants side is higher in energy than the product side.

What is an exothermic reaction?

An exothermic reaction is one in which the heat of the reactants is greater than that of the products. In that case, energy is given off in the reaction  as heat and the reaction vessel is warmer.

Now, in an exothermic energy diagram, the reactants side is higher in energy than the product side.

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__________ What is the value of the activation energy for the forward reaction? Be sure to include theappropriate sign.
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Question #21TrueFalse The general name for a substance added to a reaction that affects the rate but is not consumed in the reaction is called a complex a. True b. False

Which of the following structural features is possessed by aldehydes but not ketones? A.) at least one hydrogen atom is bonded to the carbonyl carbon atom B.) At Least one hydroxyl group is bonded to the carbonyl carbon atom C.) the carbonyl carbon atom is part of a ring structure D.) the carbonyl carbon atom is bonded to two other carbon atoms

Answers

A and B I don’t know why they added that

At what temperature is a gas likely to have the lowest rate of diffusion?10
150
b
210
с
249
d
300

Answers

Answer:

150

Explanation:

A gas will have the lowest rate of diffusion the lowest temperature from a given set of temperature values.

Since 150 is the lowest value, then this represents the lowest rate of diffusion.

The rate of diffusion is related to the prevalent temperature. When gases diffuse, they move from regions of high concentration to the at of low concentration. They must have enough kinetic energy to move in order to diffuse.

The higher the temperature, the more the kinetic energy and higher rate of diffusion.

Answer:

15º

Explanation:

The rate of diffusion is lower when the temperature is lower. Since 15º is the lowest temperature of the answers, it has the lowest rate of diffusion.

2KClO3 2KCl + 3O2In the reaction represented by this equation, two moles of KClO3 decompose to form 5 moles of product.

True
False

Answers

True, because most chemical reactions have more moles but not really.
Also that they decompose better. "not really"

In which reaction is soap a product?(1) addition (3) saponification
(2) substitution (4) polymerization

Answers

Saponification because you can rearrange the letters to spell soap.

If a sample of a gas at 25.2oC has a volume of 536 mL at 0.838 atm, what will its volume be if the pressure is increased to 0.937 atm? A) 477.78 mL B) 563.21 mL C) 503.88 mL D) 613.52 mL

Answers

Final answer:

The volume of the gas sample would be 477.78 mL.

Explanation:

The student is asking about the change in volume of a gas sample when the pressure is increased. This can be solved using Boyle's law, which states that the pressure and volume of a gas are inversely proportional at constant temperature. The equation for Boyle's law is: P1 * V1 = P2 * V2

We are given the initial conditions: T1 = 25.2°C, V1 = 536 mL, and P1 = 0.838 atm. We need to find V2 when P2 = 0.937 atm. Using the Boyle's law equation, the volume can be calculated as: V2 = (P1 * V1) / P2

Plugging in the values, we get: V2 = (0.838 atm * 536 mL) / 0.937 atm = 477.78 mL

Therefore, the volume of the gas sample would be 477.78 mL (Option A) when the pressure is increased to 0.937 atm.

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Light energy used for photosynthesis is absorbed by ____ found in plant cells.mitochondria
cytoplasm
chlorophyll
nuclei

Answers

Light energy used for photosynthesis is absorbed by chlorophyll found in plant cells. Chlorophyll, the green substance found in a plant's chloroplasts, is what gives the plant its pigmentation. It is also the one that absorbs light energy in order for photosynthesis to proceed. Light energy converts CO2 and water into glucose, the food used by plants.
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