Calculate the hydroxide ion concentration, [ OH − ] , for a solution with a pH of 8.55 . [ OH − ] = M

Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

What substance has a mass of 9.5g and volume of 2.1cm^3