Calcium metal is reacted with hydrophosphoric acid to produce soluble calcium phosphide and hydrogen gas. If 5.6 mole of calcium metal is reacted, how many grams of calcium phosphide will form?

Which metals are called noble metals

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Wind and moving water provide energy. chemical mechanical thermal none of the above