Which set of coefficients correctly balances the following chemical agno3 + mgcl2 --> agcl + mg(no3)2
4, 2, 4, 2
1, 2, 1, 2
2, 1, 2, 1
1, 1, 1, 1

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.