grams

  1. E

    Mole calculations confusion (please help!)

    Hello guys! Im really confused with this one part of calculating the number of moles in 1.00 gram the last part in bold is confusing me. why is the 2 negative? can someone please explain finding a number of moles in a certain number of grams? im really confused : ( this is what the teacher...
  2. A

    Help with grams of reactant...

    A solution of 150.0 ml of 0.300 M NaOH is mixed with a solution of 200.0 mL of 0.150 M H2SO4. write a balanced equation and a net ionic reaction. what is the net ionic product? how many grams of net ionic product form? how many grams of the excess reactant is left (in the solution) I...
  3. K

    Gallons of 100% octane to grams of CO2?

    If our country burns 1.2x10^8 gallons of 100% octane per year, how many grams of CO2 are produced per year? Please help and explain.
  4. A

    Finding Grams of Solvent

    I have a chemistry exam tomorrow, and while I was studying I came across a problem that was unknown to me. A solution has a density of 1.18 g/mL and a volume of 625 mL. The solution contains 30.0 grams of CaCl2. How many grams of solvent are present? I have found the molarity of the solution...