Water, H2O, HOH these are all the same compound just worded differently
Answer: the theory that all matter us made up of tiny invisible particles. Hope that help you out :)
Explanation:
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