Question

Lithium reacts spontaneously with bromine to produce lithium bromide. Write the balanced chemical equation for the reaction. (Use the lowest possible whole number coefficients. If 39.0 g of lithium and 41.5 g of bromine are present at the beginning of the reaction, determine the following

Answer 1

The reaction equation is:
Li + Br → LiBr

39 grams of Li = 39 / 7 = 5.57 moles of lithium
41.5 grams of Br = 41.5 / 80 = 0.52 mole of bromine