1. moles = grams/molar mass
2. (mass nitrogen/mass amm sulfide)*100 = ??
3. mass Hg = volume x density
Then convert to moles.
Then remember there are 6.022E23 atoms for every mole.
1. Calculate the number of moles of carbon atoms present in 2.4g of ethanol (C2H6O).
2. What is the % Nitrogen by weight in 3.696 mol of ammonium sulfide.
3. How many atoms of mercury are present in 5.4 cubic cm of liquid mercury? The density of mercury is 13.55g/cc.
2 answers
3.50 mol x 6.022 x 10^23
= 2.11 x 10^24 carbon atoms
= 2.11 x 10^24 carbon atoms
1 answer