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- 1. Multiple Choice
What is the SI unit for the amount of a substance?
meter
mass
molecule
mole
- 2. Multiple ChoiceHow many hydrogen atoms are in the compound: (NH4)2CO33468
- 3. Multiple ChoiceWhat is the percent composition of nitrogen in NH3?25%14%28%82%
- 4. Multiple ChoiceWhich pair has the same empirical formula?NaCrO4 and Na2Cr2O7C2H4O2 and C6H12O6C3H6O3 and C2H6O2CH4 and C2H6
- 5. Multiple ChoiceA formula with the lowest whole # ratio of elements in a compound is calledMolecular FormulaChemical FormulaEmpirical FormulaDistance Formula
- 6. Multiple ChoiceWhat is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?CH2OC2H4O2C4H8O4C6H12O6
- 7. Multiple Choice
C6H12O6 has how many total atoms?
6
12
24
- 8. Multiple Choice
What is STP?
States of Temperature and Pressure, 1 0 atm
Standard Tire Pressure, 65 psi
Standard Temperature and Pressure, 1 atm
Standard Timing and Pressure, 273 K 0 atm
- 9. Multiple ChoiceDiatomic molecules are __________ found in nature as their single element: I, O, N, H, Br, Cl, or H.oftenneversometimesalways
- 10. Multiple ChoiceWhat is Avogadro's Number?6.02 x 1023- 6.02 10236.02 x 10226,020,000,000,000
- Answer choicesTagsAnswer choicesTags