Question

Determine the mass (in grams) of 1.45 mol of diphosphorus dioxide.

I am getting my answer to be 136.22g... but ITS NOT RIGHT aparantly.

All I did was that I took 1.45mol and multipled P2O2's molar mass...... to get grams right?

Answer 1

Right on the prodedure. However, how did you get five significant digits in the answer when your moles had only three significant digits?

Answer 2

calculate the mass in grams : 4.57 x 10^20 H2O2 molecules