A chemist measures the energy change Δ H during the following reaction: 2 NO 2 (g) → N 2 O 4 (g) = Δ H − 55.3 kJ Use the information to answer the following questions.
his reaction is... |
endothermic. |
exothermic. |
|
Suppose 97.0g of NO2 react. Will any heat be released or absorbed? |
Yes, absorbed. |
Yes, released. |
|
No. |
|
If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. |
kJ |
Be sure your answer has the correct number of significant digits. |
1)
since ΔH is negative, the reaction is exothermic
Answer: exothermic
2)
Reaction is exothermic
SO, heat is being released
Answer:
yes, released
3)
Molar mass of NO2,
MM = 1*MM(N) + 2*MM(O)
= 1*14.01 + 2*16.0
= 46.01 g/mol
mass(NO2)= 97.0 g
use:
number of mol of NO2,
n = mass of NO2/molar mass of NO2
=(97 g)/(46.01 g/mol)
= 2.108 mol
Since Δ H is negative, heat is released
when 2 mol of NO2 reacts, heat released = 55.3 KJ
So,
for 2.108 mol of NO2, heat released = 2.108*55.3/2 KJ
= 58.29 KJ
Answer: 58.3 KJ
A chemist measures the energy change Δ H during the following reaction: 2 NO 2 (g)...
A chemist measures the energy change AH during the following reaction: 2 N0 (9) -- N204(9) AH= -55.3 kJ Use the information to answer the following questions. This reaction is... X10 endothermic. O exothermic. O Yes, absorbed. O Yes, released. Suppose 42.5 g of NO2 react. X Will any heat be released or absorbed? O No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or...
A chemist measures the energy change an during the following reaction: 2 NO,(9) - N20 (9) AH=-55.3 kJ Use the information to answer the following questions. This reaction is... Suppose 89.8 g of NO, react. Will any heat be released or absorbed? endothermic. exothermic Yes, absorbed Yes, released. ? No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to 3...
I have no idea for this question. A chemist measures the energy change AH during the following reaction: AH-55.3 kJ Use the information to answer the following questions. O endothermic. This reaction is... ×10 exothermic. O Yes, absorbed. O Yes, released. O No. Suppose 80.2 g of NO2 react. Will any heat be released or absorbed? If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or...
A chemist measures the energy change Delta H during the following reaction: 2H_2I(l) rightarrow 2H_2(g) + O_2(g) Delta H = 572. kJ Use the information to answer the following questions. This reaction is ... exothermic endothermic Suppose 94.8 g of H_2O react. Will any heat be released or absorbed? Yes, absorbed Yes, released No If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round...
A chemist measures the energy change AH during the following reaction: 2 NO2(g) N204(9) AH=-55,3 kJ Use the information to answer the following questions. This reaction is... Suppose 36.3 g of NO, react. endothermic. exothermic Yes, absorbed. Yes, released No. х Will any heat be released or absorbed? If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to 3 significant digits.
A chemist measures the energy change ah during the following reaction: 2 HgO(s) + 2 Hg()+ O2(9) AH= 182. kJ Use the information to answer the following questions. This reaction is... Suppose 95.0 g of HgO react. Will any heat be released or absorbed? endothermic. exothermic Yes, absorbed. Yes, released No. 5 ? If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your...
A chemist measures the energy change AH during the following reaction: 2 HgO(s) + 2 Hg(0+02(9) AH= 182. kJ Use the information to answer the following questions. This reaction is... DO Suppose 47.7 g of HgO react. endothermic. exothermic. Yes, absorbed. Yes, released. No. Х Will any heat be released or absorbed? If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer...
A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(0+02(9) AH=182. kJ Use the information to answer the following questions. This reaction is... Suppose 18.0 g of HgO react. Will any heat be released or absorbed? endothermic. exothermic. Yes, absorbed. Yes, released No. Х S If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to...
A chemist measures the energy change AH during the following reaction: AH=-2220. kJ CH (0)+50 (g) 3 CO(g)+4H,O(1) Use the information to answer the following questions. This reaction is... endothermic. exothermic. Yes, absorbed. Yes, released Suppose 73.5 g of CHg react. x 6 ? Will any heat be released or absorbed? No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer...
A chemist measures the energy change AH during the following reaction: CzHg(9)+502(9) — 3C0 (9)+4H20(1) AH=-2220. kJ Use the information to answer the following questions. This reaction is... X10 Suppose 50.4 g of C,H, react. endothermic. exothermic. Yes, absorbed. Yes, released. TO No. Will any heat be released or absorbed? If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Be sure your answer has...