Mole Prac Test
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Mole Practice Test 1. What is the molar mass of NaCl? A. 58.44 g/mol B. 175.3 g/mol C. 2.00 g/mol D. 29.22 g/mol E. 28 g/mol 2. What is the molar mass of H 2 S? A. 64.11 g/mol B. 34.08 g/mol C. 51 g/mol D. 17 g/mol E. 78.16 g/mol 3. Which gas has the lowest molar mass? A. Cl 2 B. N 2 C. Ne D. Br 2 E. O 2 4. How many nitrogen atoms are indicated by the formula Al(NO 3 ) 3 ? A. 9 B. 4 C. 0 D. 3 E. 1 5. The total number of oxygen atoms indicated by the formula Fe 2 (CO 3 ) 3 is A. 12 B. 6 C. 9 D. 3 E. 18 6. What is the molar mass of nitroglycerin, C 3 H 5 (NO 3 ) 3 ? A. 309 g/mol B. 165 g/mol C. 199 g/mol D. 227 g/mol E. None of the above 7. One mole of oxygen atoms represents A. 6.02 x 10 23 atoms B. 16 atoms C. 32.0 g D. 1.00 g E. None of the above 1
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Moles Chemistry
Transcript of Mole Prac Test
Mole Practi ce Test1. What i s the molar mass of NaCl?A. 58.44 g/molB. 175.3 g/molC. 2.00 g/molD. 29.22 g/molE. 28 g/mol2. What i s the molar mass of H2S?A. 64.11 g/molB. 34.08 g/molC. 51 g/molD. 17 g/molE. 78.16 g/mol3. Whi ch gas has the lowest molar mass?A. Cl2B. N2C. NeD. Br2E. O24. How many ni trogen atoms are i ndi cated by the formula Al(NO3)3?A. 9B. 4C. 0D. 3E. 15. The total number of oxygen atoms i ndi cated by the formula Fe2 (CO3)3 i sA. 12B. 6C. 9D. 3E. 186. What i s the molar mass of ni troglyceri n, C3H5(NO3)3?A. 309 g/molB. 165 g/molC. 199 g/molD. 227 g/molE. None of the above7. One mole of oxygen atoms representsA. 6.02 x 1023 atomsB. 16 atomsC. 32.0 gD. 1.00 gE. None of the above1Mole Practi ce Test8. Whi ch represents the greatest mass?A. 1.0 mol ZnB. 1.0 mol CuC. 1.0 mol AlD. 1.0 mol FeE. all the same9. One atom of calci um wei ghsA. 6.02 x 1023 amuB. 40.08 gC. 20 gD. 20 amuE. None of the above10. A mole of oxygen molecules contai ns how many oxygen atoms?A. 1.204 x 1024B. 3.01 x 1023C. 16D. 6.02 x 1023E. 3211. Convert 48 g O2 to mol O2.A. 0.75 molB. 3 x 1023 molC. 1.5 x 10-23 molD. 3.0 molE. 1.5 mol12. Calculate the number of molecules i n 0.000108 g of gaseous oxygen.13. Calculate the mass of 4.52 mol of si lver.14. Calculate the number of molecules of CH4 i n 48 g CH4.15. A 75.0-mL sample of Hg (densi ty = 13.6 g/mL) contai ns how many atoms of Hg?2Mole Practi ce TestAnswer Sheet1. A. 58.44 g/mol2. B. 34.08 g/mol3. C. Ne4. D. 35. C. 96. D. 227 g/mol7. A. 6.02 x 1023 atoms8. A. 1.0 mol Zn9. E. None of the above10. A. 1.204 x 102411. E. 1.5 mol12. 2.03 x 1018 molecules13. 488 g14. 1.8 x 1024 molecules15. 3.06 x 1024 atoms3Mole Practi ce TestStandards SummaryCA 3.c Students know one mole equals 6.02x10^(23) parti cles (atoms ormolecules).CA 3.d Students know how to determi ne the molar mass of a molecule from i tschemi cal formula and a table of atomi c masses and how to convert themass of a molecular substance to moles, number of parti cles, or volume ofgas at standard temperature and pressure.4
