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WorksheetsStoichiometry Quizizz #1
Total questions: 15
Worksheet time: 39mins
What do you use to find a mole ratio of elements in a chemical formula?
element symbols
coefficients
subscripts
none of the above
What do you use to find the mole ratios of substances in a chemical equation?
element symbols
coefficients
subscripts
none of the above
If you want to change moles of a substance to atoms of a substance, what should you do?
divide by the molar mass
divide by Avogadro's number
multiply by molar mass
multiply by Avogadro's number
If you want to change atoms of a substance to moles of a substance, what should you do?
divide by molar mass
divide by Avogadro's number
multiply by molar mass
multiply by Avogadro's number
If you want to change moles of a substance to grams of a substance, what should you do?
divide by the molar mass
divide by Avogadro's number
multiply by the molar mass
multiply by Avogadro's number
If you want to change grams of a substance to moles of a substance, what should you do?
divide by the molar mass
divide by Avogadro's number
multiply by the molar mass
multiply by Avogadro's number
What is the mole ratio of Fe2O3 to Iron in the compound?
1:2
2:3
1:3
2:1
What is the mole ratio of Hydrogen to Sulfur in H2SO4?
1:2
2:1
1:4
1:1
How many moles of Hydrogen are in 5.3 moles of H2O?
5.3 mol H
10.6 mol H
2.65 mol H
5.24 mol H
What is the mass of 3 moles of Oxygen gas (O2)?
96 g O2
48 g O2
10.67 g O2
5.3 g O2
A sample of Aluminum oxide (Al2O3) has a mass of 458.82 grams. How many moles of Aluminum oxide are in this sample?
10.66 mol Al2O3
46,781.29 mol Al2O3
4.5 mol Al2O3
19,720.08 mol Al2O3
How many atoms of Calcium are in 3 moles?
18.06 x 1023 atoms Ca
1.806 x 1024 atoms Ca
.498 x 1023 atoms Ca
4.98 x 1022 atoms Ca
A sample of Sodium chloride (NaCl) has 5.7 x 1024 formula units. How many moles of Sodium chloride are in the sample?
3.43 x 1024 mol NaCl
34.3 x 1023 mol NaCl
9.47 mol NaCl
333.1 mol NaCl
How many grams of Oxygen are in 6.3 moles of CO2?
100.8 g O
0.788 g O
50.4 g O
201.6 g O
How many molecules of Carbon tetrachloride (CCl4) are in 300 grams of CCl4?
2.78 x 1028 molecules CCl4
3.24 x 1022 molecules CCl4
1.174 x 1024 molecules CCl4
1.95 molecules CCl4
