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- 1. Multiple Choice
How many moles of sodium chloride are in a 321.8 g sample?
18810 moles
3.315 x 1024 moles
5.507 moles
4.767 moles
- 2. Multiple ChoiceWhat is the mass of 2.50 mol of oxygen gas O2?40.0 g80.0 g16.0 g32.0 g
- 3. Multiple Choice
how many atoms are contained in a 456 g sample of carbon dioxide?
10.34 atoms
6.237 x 1024 atoms
1.871 x 1025atoms
2.079 x 1024 atoms
- 4. Multiple ChoiceHow many atoms would be contained in 454 grams of iron (Fe)?6.02x1023 atoms8.14 atoms4.90x1024 atoms55.85x1023 atoms
- 5. Multiple ChoiceHow many molecules are in 32.4 grams of phosphorous pentoxide?1.76 x 1023 molecules0.29 moles1.76 x 1022 molecules0.29 molecules
- 6. Multiple Choice
How many moles of copper (II) chlorate contain 1.45x1021 molecules?
8.73x1044
1.20x1024
0.00241
1.45
- 7. Multiple Choice
How many grams are in 3.3 mol of Potassium Sulfide?360 g454 g238 g132 g - 8. Multiple Choicecalcium phosphateCaPO4Ca2(PO4)3Ca3PO4Ca3(PO4)2
- 9. Multiple Choicemagnesium carbonateMg2CMg2CO4Mg2(CO3)2MgCO3
- 10. Multiple ChoiceName the following ionic compound: Cr(NO2)3chromium nitritechromium nitridechromium III nitridechromium III nitrite
- 11. Multiple ChoiceHNO2hydronitrogenhydrogen nitrogen oxygennitrous acidnitric acid
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