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SI #4

This document contains a 14-question chemistry practice test covering topics like: [1] unit conversions, [2] identifying incorrectly labeled units, [3] identifying the SI unit for velocity, [4] calculating density, [5] determining formula weights, [6] calculating moles, [7] calculating grams from moles, [8] calculating number of molecules, [9] calculating number of atoms, [10] writing empirical formulas, and [11] balancing chemical equations. It also contains a nomenclature section asking to name or give the chemical formula for various compounds.

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GENERAL CHEMISTRY-I (1411) S.I. # 4 1. Which of the following is the same as 0.001 cm? _____________ a. 0.01 mm b. 100 mm c. 0.01 cm d. 0.01 dm e. 1 mm 2. Which is incorrectly labeled? _____________ a. 2.3x10-12m = 2.3 pm b. 5.8x10-9 s = 5.8 ns c. 4.8x10-6 mL = 4.8 microliters d. 4.8x103g = 4.8 kg 3. The common English set of units for expressing velocity is miles/hour. The SI unit for velocity is __________ 4. If the mass of an object is 9.83 g, what volume must it have in order for it to sink in liquid mercury? (density of mercury is 13.6 g/cm3) 5. Find the formula weight of the following: a. C8H18 = _____________ b. C4H9OCl = _____________ c. BaSO4 = _____________ d. UF6 = _____________ e. C10H16N5O13P3 = _____________ 6. Find the number of moles present in: a.15 g of NaN3 = _____________ b. 75 g of BaOH = _____________ c. 15 kg C6H12O6 = _____________ 7. Find the number of grams present in: a.13mol CCl4 = _______________ b. 35.3 mol CuPO4 = _____________ c. 29 mol of CeMnO4 = _______________ 8. How many molecules are in 78 g of AgNO3? 9. How many fluorine atoms are there in 87,130 mg of UF6?
10. Write the empirical formula if it exists: a. C12H20 __________________ b. H8S8 __________________ c. Na2N3O6 __________________ d. C18H21N6O3 __________________ e. S5F5O30 __________________ f. C7H14O9 __________________ g. Li2P4O8 __________________ 11. Balance the following equations: a. __ KOH + ____ SO2  _____ K2S + _____ O2 + _____ H2 b. __ ZnCl2 + ____ H3PO4  _____ HCl + _____ Zn3(PO4)2 c. __ C8H16 + ____ O2  _____ CO2 + _____ H2O d. __ Fe2O3 + ____ HCl  _____ FeCl3 + _____ H2O e. __ HF + ____ Cu2O3  _____ H2O + _____ CuF3 NOMENCLATURE: Give the name or formula for the following 1. H2SO4- __________________________ 2. CaCl2 __________________________ 3. Cu(ClO4)2 __________________________ 4. Cr2O3 __________________________ 5. CH4 __________________________ 6. C2H6 __________________________ 7. C3H8 __________________________ 8. C4H10 __________________________ 9. C5H12 __________________________ 10. C6H14 __________________________ 11. C7H16 __________________________ 12. C8H18 __________________________ 13. C9H20 __________________________
14. C10H22 __________________________