A chemist reacts 24.0 grams of carbon with 24.0 g of oxygen to get 42.0 g of a gas, along with some leftover carbon. In another experiment, she reacts 30.0 grams of carbon with 40.0 grams of oxygen to get 70.0 g of a gas. Are the two gases the same?

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?