- What is the pyramid of the sun made out of?

Discover Questions

The half-life of barium-139 is 86 minutes. If you start with 100 grams of barium-139, how much will be left at the end of 4 half-lives? How would I find the eigenvalues of a 2 x 2 matrix? The first row is 3, 2 and the second row is 3, 8.? Whats the coldest temperature you could survive in, wearing layers of clothes, gives, ski mask, goggles, etc? I am trying to help my son with chemistry hw. How do we convert grams of ammonium chloride to atoms of hydrogen? A chemical reaction is at equilibrium. What will be the effect if more of the product is added?