How many electron(s) is (are) needed to complete hydrogen's outer shell.

Which of the following is considered a benefit to using wind energy as a source of power

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?

The boiling point of liquids is very high what does it indicate