What is the formula mass of sodium chloride NaCl

Na (Ar = 23), Cl (Ar = 35.5)

(a)  

What is the formula mass of magnesium oxide MgO

Mg (Ar = 24), O (Ar = 16)

(a)  

What is the formula mass of ammonia NH₃

N (Ar = 14), H (Ar = 1)

(a)  

What is the formula mass of magnesium chloride MgCl₂

Mg (Ar = 24), Cl (Ar = 35.5)

(a)  

What is the formula mass of sodium oxide Na₂O

Na (Ar = 23), O (Ar = 16)

(a)  

What is the formula mass of iron oxide Fe₂O₃

Fe (Ar = 56), O (Ar = 16)

(a)  

What is the formula mass of glucose C₆H₁₂O₆

C (Ar = 12), H (Ar = 1), O (Ar = 16)

(a)