If you have a 4.0 g of radioactive substance left after 4 half-lives have passed then how much did you have originally?
25 g
50 g
64 g
10 g

The rules of engagement (roe) working group is often used to (select all that apply.)

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?