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The specific heats of Lead and Gold are both is 0.128 J/g°C. Which of the following statements is not true?
Select one:
a. When 10.0 g of lead is heated from 25°C to 35°C, it gains128 J of heat
b. When 10.0 g of gold is heated from 25°C to 35°C, it gains128 J of heat
c. Gold and Lead have the same molar heat capacity
d. None of the statements are false
e. Lead has the higher molar heat capacity
Question 2
Calculate ΔH for the reaction
4 NH3 (g) + 5 O2 (g) →4 NO (g) + 6 H2O (g), from the following data:
N2 (g) + O2 (g) →2 NO (g) ΔH = -181 kJ
N2 (g) + 3 H2 (g) →2 NH3 (g) ΔH = -92.0 kJ
2H2(g) +O2(g) →2H2O(g) ΔH = -484 kJ
Question 3
The combustion of propane produces heat according to the equation:
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g) ΔH° = is –2044 kJ
How much heat will be evolved if 2.20g of propane is combusted?
Question 4
A 20.0 g piece of a metal with specific heat of 0.900 J/g.0C at 98.0 0C dropped into 50.0 g water in a calorimeter at 20.0 0C. The specific heat of water is 4.18 J/g.0C Calculate the final equilibrium temperature of the mixture
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