What’s the molar mass of Au(NO3)3?

5 Answers

• Molar mass = 382.9816 g/mol

  Au Gold atomic mass 196.9665694 1 atom 51.4298 % of total mass

  N Nitrogen atomic mass 14.00672 3 atoms 10.9718 % of total mass

  O Oxygen atomic mass 15.99943 9 atoms 37.5984 % of total mass

  196.9665694 + 14.00672*3 + 15.99943*9 = 382.9816 = molecular mass

  So molar mass = 382.9816 g/mol

• Molar Mass Of Au

• Au No3 3

• Other people have answered this correctly, but to figure it out:

  1) Look at a periodic table. Find the mass of each element.

  Au = 196.96

  N = 14.01

  O = 15.99

  2) Figure out how many atoms you have of each (get this from the formula). Multiply.

  Au = 1 * 196.96

  N = 3 * 14.01 = 42.03

  O = 9 * 15.99 = 143.91

  3) Add them up.

  196.96 + 42.03 + 143.91 = 382.9 g/mol

  Now, that wasn’t so hard, was it?

• 382.98