32p is a radioactive isotope with a half-life of 14.3 days. if you currently have 38.1 g of 32p, how much 32p was present 9.00 days ago?

Gymnast always perform on padded mats. how does the mats protect the gymnast

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.