Answer:
ΔH = -22 kcal
Step-by-step explanation:
N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + 22 000 cal
Energy is on the right-hand side of the equation, so it is being <em>released</em> by the system.
The thermodynamic convention is that <em>energy going out of a system is negative.</em> Thus,
ΔH = -22 000 cal Convert to kilocalories
ΔH = -22 kcal
A and B are both wrong, because you divide by 1000 to convert calories to kilocalories.
C is wrong, because the sign must be negative for an exothermic reaction.
Answer:
If mass increases, force increases.
Explanation:
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Answer:
340.8mL
Explanation:
The following data were obtained from the question:
P1 = 740.0mmHg
V1 = 350.0mL
P2 = at stp = 760mmHg
V2 =?
Using Boyle's law equation P1V1 = P2V2, we can easily find the new volume as illustrated below:
P1V1 = P2V2
740 x 350 = 760 x V2
Divide both side by 760
V2 = (740 x 350) /760
V2 = 340.8mL
The new volume is 340.8mL
Answer:
66 grams of carbon dioxide
C3H8+5O2=3CO2+4H2O