What is the molar mass of a gas with a density of 3.50g/L at a temperature of 345 K and a pressure of 0.950 atm?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

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?

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?