Radiation a. occurs in solids. b. occurs in liquids. c. requires physical contact between molecules. d. is the method of heat transfer used by the sun

Which statement about the stamps is correct?

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?

Why doesn't heat added to water make the tempature rise above 100c