1.14

A balloon is a sphere with a radius of 5.0 m. The force of air against the walls of the balloon is 45 N. What is the air pressure inside the balloon? (surface area = 12.56 x radius^2; 1 Pa = 1 N/m^2)

1.4 x 10^-1 Pa

A chemist burned a serving of peanuts in a calorimeter and sees that 150,000 J of energy is released. What should the information on the nutrition label say? (1 Calorie = 1,000 calories; 1 calorie = 4.186 J)

35.8 Calories

A box measures 2 cm x 0.09 m x 20 mm. What is its volume in cubic centimeters?

36 cubic centimeters

A container has the dimensions of 10 cm x 50 mm x 0.2m. It is filled completely with 5.0 kg of a powdery ore. What is the density of the ore in g/cm^3? (D=m/V)

5.0 g/cm^3

Which of the following units would be used in energy calculations in thermodynamics?

kJ/mol