chem practicefinal-summer

chem practicefinal-summer - Molar masses that you may find...

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Molar masses that you may find useful… NO = 30.01 g/mol PbS = 239.27 g/mol PCl3 = 137.32 g/mol Ca3(PO4)2 = 310.18 g/mol Al2O3 = 101.96 g/mol Ba3(PO4)2 = 601.93 g/mol Fe2O3 = 159.7 g/mol C6H12O6 = 180.2 g/mol Fe(NO3)3 = 241.9 g/ mol Al(NO2)3= 165.01 g/mol H2SO4 = 98.12 g/mol C8H18 = 114.22 g/mol CH4 = 16.04 g/mol H2S = 34.09 g/mol K3PO4 = 212.27 g/mol NO2 = 46.01 g/mol H2O = 18.02 g/mol HNO3 = 63.02 g/mol 1. How many significant figures should the answer to the following calculation be reported to? ( 98.116 + 2.63 ) / 100.000 a. 2 b. 3 c. 4 d. 5 e. 6 2. Which of the following sets of information represent the bromide ion? protons neutrons electrons a. 35 45 34 b. 45 36 34 c. 35 44 36 d. 44 35 36 e. 45 35 35 3. Name the following compound: Ca3N2 a. tricalcium dinitride b. calcium (III) nitride c. calcium (II) dinitride d. calcium nitride e. calcium nitrite 4. The floor of a room is 78.9 square feet. Carpeting is sold in units of square yards. Convert this value to square yards. (Hint: 3.00 feet = 1.00 yard) a. 26.3 yd2 b. 237 yd2 c. 710.yd2 d. 2.92 yd2 e. 8.77 yd2
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5. Determine the ground state electron configuration for Sn (Z=50). a. [Kr]5s24d105p2 b. [Kr]5s24d105p4 c. [Kr]5s24d10 d. [Kr]5s25p6 e. [Xe] 6. A liquid has a density of 3.88 g/mL. What volume (in L) of the liquid must be measured to obtain a mass of 77.4 grams? a. 3.00 x 10-1 L b. 1.99 x 10-2 L c. 5.01 x 10-2 L d. 3.33 x 10-3 L e. 6.48 x 10-3 L 7. Place the following in order of decreasing atomic size. Ne P S a. S > P > Ne b. Ne > S > P c. Ne > P > S d. S > Ne > P e. P > S > Ne 8. Which of the following is a covalent compound? a. SF6 b. AlCl3 c. NH4C2H3O2 d. LiNO3 e. More than one of the above compounds is a covalent compound. 9. Place the following in order of increasing ionization energy.
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chem practicefinal-summer - Molar masses that you may find...

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