If you start with 100g of radioactive sample X with a half---life of 2 days, how long
Would it take for the sample to decay to 25g?

Which best describes why nh4+ can form an ionic bond with cl-?

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division