The first chemical equation was designed by

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?

Find the mass, in grams, of 5.00*10^23 molecules of f2

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.