Sam heated 4.00 g mercury (II) oxide (molar mass of HgO is 216.59 g/mol) to form mercury (molar mass of Hg is 200.59 g/mol) and oxygen (mola rmass of O2 is 32.00 g/mol). He collected 0.280 g oxygen. The balanced equation is shown below. 2HgO-> 2Hg + O2
What was the percent yield of oxygen
percent yield=actual yield/theoretical yield x 100%

The electromagnetic force acts between what

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.

What the blanks in these lines are ?