# chemistry

posted by .

quarters are 91.67% mass/mass copper and 8.33% mass/mass nickel. if the average quarter weighs 5.67 grams, how many atoms of nickel are in a quarter?

• chemistry -

grams Ni = 5.67g x 0.0833 = ??
moles Ni = grams/molar mass.

## Similar Questions

1. ### Math

Lana is calibrating a scale. The scale calibrates at 50g. When she puts a nickel on the scale, it weighs 4.94g. A nickel weighs 5g. If a fifty cent piece weighs 11.17g, a quarter 5.71g, a dime 2.26g, a nickel at 4.94g, and a penny …
2. ### Chemistry - Solution Stoichiometry

A piece of nickel is placed in a beaker with 350 mL of copper (II) sulfate. Calculate the concentration of the copper (II) sulfate solution. Initial mass of nickel - 15.5 g Final mass of nickel - 11.4 g What do i do with the final …
3. ### chemistry

A nickel has a mass of 5.000 grams and is composed of 25% nickel and 75% copper. What is the mass of copper in the nickel?
4. ### chemistry

quarters are 91.67% mass/mass copper and 8.33% mass/mass nickel. if the average quarter weighs 5.67 grams, how many atoms of nickel are in a quarter?
5. ### chemistry

If the average quarter weighs 5.67grams, how many atoms of nickel are in a quarter?
6. ### chemistry

What is the difference in mass between a nickel that weighs 4.8 and a nickel that weighs 4.868 ?
7. ### chemistry

A nickel is found to have a mass of 5.06 grams. Using unit analysis, show what the mass of this nickel is in ounces.
8. ### gen.chememistry

a students weighs 1o quaters and finds that their total mass is 56.63 grams . what should she report as the average mass of a quarter based on her data
9. ### math

John has 8 quarters, 3 dimes,and 7 nickels in the change holder in his car. He uses 16 of those coins, totaling \$2.50, to buy some tacos. Which coins remain in the change holder?
10. ### chemistry

Calculate the mass of nickel(II) sulfate and the mass of water contained in 200. g of a 6.00% solution of nickel(II) sulfate

More Similar Questions