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-Dominant- [34]
3 years ago
15

I need help on this question

Chemistry
1 answer:
kumpel [21]3 years ago
8 0
A!!!!!!!!!!!!!!!!!!!!!!
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How to calculate delta S surroundings? calculate Delta S(surr) at the indicated temperature for a reaction having each of the fo
astraxan [27]
You can use the equation ΔS(surr)=q(surr)/T or ΔS(surr)=-q(rxn)/T.
the two equations are equal since we know that the energy the system (reactoin) puts out just goes into the surroundings.  
(In other words q(surr)=-q(rxn))

Using the equation, <span>ΔS(surr)=-(-283kJ/298K)=0.9497kJ/K or 949.7J/K

This answer makes sense since the reaction is exothermic which means it released energy into the system which usually causes the entropy to increase.

I hope that helps.</span>
8 0
3 years ago
22. Which one of the following processes has a negative value for AH°?
ss7ja [257]

Answer:

C

Explanation:

A negative deltaH means that the reaction has to give up heat in order to happen. You have to treat deltaH as a reactant. So the question is do you need to add heat to the reactants to make the products. If you do, deltaH is plus.

Heat is required to make a solid go to a gas. deltaH is plus. A is not the answer.

A lot of heat is required for B (something like 400 Kj / mole. Like A, deltaH is plus and B is not the answer.

C: The liquid has to give up heat in order for the this reaction to take place. C is the answer.

D requires heat. It is not the answer.

4 0
3 years ago
According to one acid-base theory, water can act as a base because a water molecule can
Anna11 [10]

Answer:

1) donate an H+ ion

Explanation:

option 1 is correct

3 0
3 years ago
Please help with this question!
Alex17521 [72]

Answer:

A) potential energy is stored energy. Kenetic energy is energy of motion.

6 0
3 years ago
What adaptations allow a camel and a cactus to survive in warm environments?
lesya [120]

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A camel stores fat in its hump, while the cactus stores water in its thick stem.

Explanation:

8 0
3 years ago
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