What is the correct name of the compound al2s3

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?

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

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains