Find the molar mass of each compound.?

Question

1. (NH4)3PO4


2. Na2SO3


3. HNO2


4. N2O5

Answer 1

You just need to add up the atomic masses of the individual atoms in the compound to get the molar mass in grams. For example, in 4., the molar mass of N2O5 is 14*2 + 16*5 = 28 + 80 = 108, because the atomic mass of nitrogen is 14 and the atomic mass of oxygen is 16. If you want to, you can look up more precise atomic masses for the elements.

Answer 2

I wont answer cause that'd take the fun out of learning. As if but you really need to know this if its one of your subjects. This is basic chemistry. Get out a periodic table and add the values of each of the elements in a compound and there you have it. N.B. its the values underneath the element you need to add and not the consequtive no's