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Answer: 5
Explanation:
I hope this helped!
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- Zack Slocum
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Answer:
More energy will be released from the old substance than the new substance will need to form it's chemical bonds.
Explanation:
Given
Chemical A and Chemical B react in an exothermic reaction.
This means energy is released when they react to give products. The product formation also requires energy, which is got from the energy released when A and B reacts. The energy that is left after the formation of products is released as heat. So in order for a reaction to be exothermic, the energy released by the reactants should be more than the energy required for the new chemical bonds to be formed to give the products.
Trigonal planar. Hope that helps!
2.6 grams because A equals 6.8 and C is the final answer of the equation so you would subtract the answer from a which gives you 2.6 grams
Answer:
Explanation:
<u>1) Reaction (given):</u>
<u />
- FeO(s) + CO(g) → CO₂(g) + Fe(s) ΔH = -11.0 kJ;
ΔS = -17.4 J/K
<u />
<u>2) Spontaneous reactions (ΔG < 0)</u>
The sign of the change in free energy (ΔG) tells if a reaction is spontaneous or not at a given temperature and constant pressure.
If ΔG is negative ( ΔG < 0) the reaction is spontaneous; if ΔG is positive ( ΔG > 0) the reaction is nonspontaneous.
Then, determine the temperature at which ΔG becomes zero, which is the temperature at which the reaction becomes nonspontaneous.
<u>3) ΔG⁰ = ΔH⁰ - TΔS⁰</u>
ΔG⁰ = -11,000 J - T (-17.4 J/ K) [ -11.0 kJ were converted to J]
0 = - 11,000 J + 17.4 T J/K
11,000 J = 17.4 T J/ k
T = 11,000 kJ / (17.4 J/K) = 632 K ← answer
