Question

The molecular weight of phosphoric acid, H 3 PO 4 , is 97.99 * g/(mol) What is the mass, in grams, of 0.00948 mol of phosphoric acid?

Answer 1

0.929g

Step-by-step explanation:

I did it on khan and put the answer the other person gave and it was wrong so this is correct

Answer 2

0.93g

Step-by-step explanation:

Given parameters:

Molecular weight = 97.99g/mol

Number of moles = 0.00948 mol

Unknown:

Mass of phosphoric acid = ?

Solution:

To find the mass of phosphoric acid, use the expression below;

Mass of phosphoric acid = molecular weight x number of moles

Input the parameters and solve;

Mass = 97.99 x 0.00948

Mass = 0.93g

A mole is one of the convenient unit for making measurements in chemistry. It related to mass, volume, atoms, electrons e.t.c in many different ways.