Amatch has about 21 milligrams of red phosphorus coating the tip. how many atoms of phosphorus is this?

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

How is the atomic number of a nucleus changed by alpha decay

How many moles are contained in 5.6 l of h2 at stp