An atom has 14 protons and 15 neutrons. Write the 2 versions of the symbol for this isotope.

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?

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form