CHEM MOLES !@@!

Mole Calculation Worksheet

1) How many moles are in 15 grams of lithium?

2) How many grams are in 2.4 moles of sulfur?

3) How many moles are in 22 grams of argon?

4) How many grams are in 88.1 moles of magnesium?

5) How many moles are in 2.3 grams of phosphorus?

6) How many grams are in 11.9 moles of chromium?

7) How many moles are in 9.8 grams of calcium?

8) How many grams are in 238 moles of arsenic?

What are the molecular weights of the following compounds?

9) Na(OH) 12) H3(PO4)

10) H2O 13) Mn2Se7

11) MgCl2 14) (NH¬4)2SO4

15) How many grams are in 4.5 moles of sodium fluoride, NaF?

16) How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)3?

17) How many grams are in 0.02 moles of beryllium iodide, BeI2?

18) How many moles are in 68 grams of copper(II) hydroxide, Cu(OH)2?

19) How many grams are in 3.3 moles of potassium sulfide, K2S?

20) How many moles are in 1.2 x 103 grams of ammonia, NH3?

21) How many grams are in 2.3 x 104 moles of calcium phosphate, Ca3(PO3)2?

22) How many moles are in 3.4 x 105¬ grams of silicon dioxide, SiO2?

23) How many grams are in 1.11 moles of manganese sulfate, Mn3(SO4)7?

  1. 👍
  2. 👎
  3. 👁
  1. Are you having that much trouble with mols? :-/. Don't sweat it.
    Almost every problem comes down to mols. There are two ways to calculate mols.
    1. When you have a solution of known molarity, then mols = M x L = ?

    2. When you have a mass of something, then mols = grams/molar mass.

    #2 will work every problem in this post except for calculating the molar mass and I assume you can add the atomic masses to find the molar mass of the compound listed.

    1. 👍
    2. 👎
  2. ,v fhlb674757y5ygewrgdcvdv

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. CHEM HELP

    what is the theoretical mole ratio- NaCl to NaHCO3 How do you determine the percentage error of an experimental mole ratio It would be easier for us to help you if we had the entire problem instead of just parts of it. However,

  2. stoichiometry

    Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25

  3. chemistry

    Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks! chemistry -

  4. science

    from the balanced equation 4NH3 +7O2 - 4NO2 + 6H2O. How many grams of oxygen are necessary to produce 4.50 moles of NO2? I think its 11 grams or 22 grams but im not sure. please help!! First the number of moles of O2, molesO2=

  1. Chem

    A solution of lithium chloride in water has a mole fraction of 0.0500 in LiCl. What is the molality? Mole fraction = moles of LiCl over total moles of solution Molality=moles of LiCl per kg of solvent How do I link this

  2. CHEMISTRY

    A throat lozenge contains 5.0mg of menthol, which has the formula C10H20O. a. How many moles of menthol are in 5.0 mg of menthol? b. What is the mass in grams of 1.56 moles of menthol? a. I got 3.2 x 10^-5 mole is that correct? b.

  3. chemistry

    water has a molar mass weight of 18 grams that's 18 grams per mole you drink a 2 liter bottle of water everyday and you are such a smarty that you you know that 1mlof h2o weighs 1 gram can you tell me how many moles of water you

  4. Science

    Study the chemical reaction. N2(g) + 3H2(g) → 2NH3(g) At the end of the chemical reaction, 5 moles of NH3 are produced. How many moles of N2 and H2 entered the reaction? A)2 moles of N2 6 moles of H2 B)1.5 moles of N2 4.5 moles

  1. Chem

    Molar mass, sometimes referred to as molecular weight, is the mass of one mole of a substance, and is usually expressed in A Liters B Grams C Density D Moles D? The mole is derived from the quantity of atoms in 12 grams of

  2. chemistry

    3. Use the ratio of stoichiometric coefficients in the reaction above to determine how many moles of O2 will react with the H2 available. Then, use molar mass to convert the moles of O2 into grams. For the reaction 2H2 + 1O2

  3. Chemistry

    Which pair of samples contains the same number of hydrogen atoms two moles of NH3 and three moles of N2H4 two moles of NH3 and one mole of N2H4 four moles of NH3 and three moles of N2H4 one mole of NH3 and one mole of N2H4

  4. chemistry

    calculate number of grams of iron in one mole of ferrous ammonium sulfate.hint how many moles are in one mole of ferrous ammonuim sulfate?

You can view more similar questions or ask a new question.