Exam 1 Practice

# Exam 1 Practice - 1. A. B. C. D. E. 2. A. B. C. D. E. The...

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1. The number of cubic nanometers in 1 km 3 is A. 10 –9 F. 10 12 B. 10 –18 G. 10 18 C. 10 –24 H. 10 24 D. 10 –27 I. 10 27 E. 10 9 J. 10 36 2. The name of the compound Ba 3 N 2 is A. barium(II) nitride F. barium dinitrite B. barium nitrite G. tribarium dinitride C. barium(III) nitrite H. tribarium dinitrite D. barium nitride I. barium(III) nitride E. barium(II) nitrite J. barium(III) dinitrite 3. What is the best answer to report for the following mathematical operation? [ ( (2.521)(13.51) ) / 2.78 ] + 0.31 = ? A. 12.561335 E. 12.56 B. 12.56134 F. 12.6 C. 12.5613 G. 13 D. 12.561 H. 1 x 10 1 4. There are only two isotopes of lithium, lithium-6 and lithium-7, with atomic masses of 6.0151 amu and 7.0160 amu, respectively. The natural abundance of lithium-6 is A. 1% F. 8% B. 2% G. 10% C. 3% H. 12% D. 4% I. 14% E. 6% J. 16% 5. An oil has a density of 0.843 g/mL. A student pours 0.9720 g of this oil into a beaker that contains water. The diameter of the beaker, which has a circular base, is 17.39 cm. The student observes a layer of oil on the surface of the water. How thick is the layer of oil? A. 0.00115 cm F. 0.0247 cm B. 0.00256 cm G. 0.0352 cm C. 0.00486 cm H. 0.133 cm D. 0.00734 cm I. 0.262 cm E. 0.0165 cm J. 0.391 cm 6. Phosphorus has the molecular formula P 4 and sulfur has the molecular formula S 8 . How many grams of phosphorus contain the same number of molecules as 6.41 g of sulfur? A. 3.10 g F. 6.19 g B. 3.21 g G. 6.41 g C. 4.62 g H. 9.24 g D. 4.83 g I. 12.4 g E. 5.59 g J. 12.8 g

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7. Which one of the following contains the greatest total number of ions? A.
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## This test prep was uploaded on 04/03/2008 for the course CHEM 159-160 taught by Professor Zbaida during the Fall '07 term at Rutgers.

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Exam 1 Practice - 1. A. B. C. D. E. 2. A. B. C. D. E. The...

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