The volume of a gas is proportional to the temperature of a gas is known as:

A 0.465 g sample of an unknown compound occupies 245 mL at 298 K and 1.22 atm.  What is the molar mass of the unknown compound in g/mol?

Which of the following signs on q and w represent a system that is doing work on the surroundings, as well as losing heat to the surroundings?

A piece of iron (C=0.449 J/g°C) and a piece of gold (C=0.128 J/g°C) have identical masses.  If the iron has an initial temperature of 498 K and the gold has an initial temperature of 298 K, which of the following statements is TRUE of the outcome when the two metals are placed in contact with one another?  Assume no heat is lost to the surroundings. 

Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbing 100.0 J of heat?

Determine the specific heat capacity of an alloy that requires 59.3 kJ to raise the temperature of 150.0 g alloy from 298 K to 398 K in J/gC.

A 6.55 g sample of aniline (C₆H₅NH₂, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter.  If the temperature rose by 32.9°C, use the information below to determine the heat capacity of the calorimeter in kJ/C.

            4 C₆H₅NH₂(l) + 35 O₂(g) →  24 CO₂(g) + 14 H₂O(g) + 4 NO₂(g)

            ΔH°rxn= -1.28 x 10⁴ kJ

Which of the following processes is exothermic?