How do you balance a chemical equation?

2H2 + O2 → 2H2O What mass of water forms when 1.45 * 10-3 g O2 react completely? (Molar mass of O2 = 32.00 g/mol; molar mass of H2O = 18.02 g/mol) 1.63 * 10-3 g 8.16 * 10-4 g 1.29 * 10-3 g

What is the expected lifespan of a nuclear reactor?

How many grams of a 20-g sample of C-14 would remain after 17,190

What is the oxidation number of Cl in chlorate ion ClO3?

Compound A is an organic compound which contains Carbon, Hydrogen and Oxygen. When 0.240g of the vapour of A is slowly passed over a large quantity of heated Copper (II) oxide, CuO, the compound A is completely oxidized to carbon dioxide and water.

How many cases of measles would you predict were reported last year

what happens when baking soda is mixed with vinegar a a new substance is formed B the substances are the same c but the baking soda stays the same but the vinegar changes form D the mixture turns from a liquid into a solid

Which celestial object is found in kuiper belt

When K - and I - combine

Why is CF4 a non polar molecule, even though it contains polar bonds?