A chemist produces 4.50 grams of a compound made of copper and chlorine. Further experiments show that the sample contains 2.12 grams of copper. Find the percent composition of copper and chlorine in the compound and then identify the compound as either copper(I) chloride (CuCl) or copper(II) chloride (CuCl2 )

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?

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.

What is the percent by mass of magnesium sulfate in mgso4.7h2o