since the masses are in grams, and moelcular weight is in g/mol, if you divide the mass by molecular weight you get just moles. just make sure what you do to one side of the equation you do to the other. And then just manipulate the equation the same way you did...
Calculate the number of moles of O atoms in 13.27 g Mn(NO3)2. Hi I did this question and it seemed pretty easy but there is this online assignment I am...
it's because of how moles of atoms (6.022x10^23 atoms) and AMU's are defined. there are 6.022x10^23 AMU's in 1 gram!. See if you can setup a conversion and from AMU / atom to g / mole of atoms. If all else fails, remember this. you can read those masses of atoms and mole...
We can rearrange the key equation and multiply moles by molar mass, substituting in the mole value that we have just calculated, 1,492.23 moles, multiplied by the given molar mass of 27.0 grams per mole. We calculate an answer of 40,290.21 grams of aluminum produced in one hour in this ...
% Concentration Definition: The percent of the solution that is solute. Units: Mass in grams (g); Volume in millilitres (mL). Analogy: Your grade on a test is the percent of the test that you got correct. There are 100 questions on the test = The solution is 100g Your got 45 corr...
molar mass of H2= 2 grams molar mass of O2= 32 grams molar mass of H2O = 18 grams How much H2O is formed from 20 grams H2? grams H2O = 20 grams H2x (1 mol H2/2 g H2) x (1 mol H2O/1 mol H2) x (18 g H2O/1 mol H2O) ...