If there are 0.398 moles , what is the volume of Na3PO4? PLEASE SHOW WORK

Answer 1

Hi Zabdi,

To solve this you would need to use the process of dimensional analysis.

Start with 0.398 moles Na3PO4×(163.94 grams Na3PO4/1 mole)×(1 mL/1.62 grams)=40.28 mL

Note:

1. 163.94 is the molar mass of Na3PO4 (in g/mol) and allows you to convert from moles of Na3PO4 to grams. This value is found from adding up the molar masses of each element in the compound (molar masses are found on the periodic table).
2. 1.62 is the density of Na3PO4 and allows you to convert from mass (grams of Na3PO4) to its volume (in mL). This value your teacher would need to give you or you could google.

I hope that was helpful! Please reach out to me if you have any more chemistry questions!