At normal temperature and pressure, air has
a density of 0.001184 g/ml. what is the mass
of air in a room that is 3.63 m by 2.97 m by
3.39 m? answer in kg.

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.