How many moles of H2CO3 are in a 1,250 g sample of the compound?

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.