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Prof. Scot Emard

Feb 20, 2025

What’s the molar mass of Au(NO3)3?

Molar mass of Gold (lll) Nitrate Please and thanks c:
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Emmanuelle Hand

Feb 20, 2025

Molar mass = 382.9816 g/molAu Gold atomic mass 196.9665694 1 atom 51.4298 % of total massN Nitrogen atomic mass 14.00672 3 atoms 10.9718 % of total mass O Oxygen atomic mass 15.99943 9 atoms 37.5984 % of total mass196.9665694 + 14.00672*3 + 15.99943*9 = 382.9816 = molecular massSo molar mass = 382.9816 g/mol... Show More
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Emmanuelle Hand

Feb 20, 2025

Other people have answered this correctly, but to figure it out:1) Look at a periodic table. Find the mass of each element.Au = 196.96N = 14.01O = 15.992) Figure out how many atoms you have of each (get this from the formula). Multiply.Au = 1 * 196.96N = 3 * 14.01 = 42.03O = 9 * 15.99 = 143.913) Add them up.196.96 + 42.03 + 143.91 = 382.9 g/molNow, that wasn’t so hard, was it?... Show More
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