High School Chemistry - Stoichiometry

1

What is the mass of 25 iron atoms?

2

How much water is necessary to make a solution with a molality of when of sodium chloride are in the solution?

3

How much water is necessary to make a solution with a molality of when of sodium chloride are in the solution?

4

What is the mass of 25 iron atoms?

5

Blood contains various dissolved ions including calcium , which is involved in many biological processes (like muscle contraction). One liter of blood from an unknown animal was shown to contain $6.00*10^{16} atoms$ of . Calculate the mass of calcium atoms in one liter of blood.

6

Blood contains various dissolved ions including calcium , which is involved in many biological processes (like muscle contraction). One liter of blood from an unknown animal was shown to contain $6.00*10^{16} atoms$ of . Calculate the mass of calcium atoms in one liter of blood.