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Name: __________________________ | ||||
10-1 Review and Reinforcement Chemical Measurments Define each of the following terms in complete sentences. 1.mole ____________________________________________________________________________ _____________________________________________________________________________. 2. formula mass _____________________________________________________________________ ______________________________________________________________________________. 3. formula unit ______________________________________________________________________ _______________________________________________________________________________. 4. Avogadro's number ________________________________________________________________ _______________________________________________________________________________. 5. molar mass _______________________________________________________________________ _______________________________________________________________________________. If the statement is true, write "true." If it is false, change the undrlined word or words to make it true. ________________6. The atomic mass of an atom is based on a comparisono with the mass of sulfer-32. ________________7. A mole of any element contains 6.02 x 10^23 atoms. ________________8. A mole of an ionic compound contains 6.02 x 10^23 molecules. ________________ 9. The molar mass of a substance in grams is always equal to the formula mass in amu. ________________ 10. One mole of HNO3 contains 3 atoms of oxygen. Find the formula mass of each of the following compounds. Show all your work. 11. CaCO3 12. MgSO4 13. NaOH 14. KCl 15. BaF2 Find the molar mass of each of the following compounds. Show all your work. 16. nitric acid (HNO3) 17. ammonia (NH3) 18. calcium sulfate (CaSO4) 19. potassium sulfide (K2S) 20. iron (III) chloride (FeCl3) |