A compound with a molar mass of 312.2 g/mol contains 69.23% C, 3.85% H, and
26.92% N. What is the molecular formula of
this compound?

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

An ice cube with a volume of 45.0ml and a density of 0.9000g/cm3 floats in a liquid with a density of 1.36g/ml. what volume of the cube is submerged in the liquid

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?