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25 MCQs for Practice Exam 1 - University Chemistry I | CHEM 1103, Exams of Chemistry

University of Arkansas (UA)Chemistry
Prof. Mya Norman

Material Type: Exam; Professor: Norman; Class: UNIVERSITY CHEM I; Subject: Chemistry; University: University of Arkansas Main Campus;

Typology: Exams

2011/2012

Uploaded on 04/11/2012

shane-germany
shane-germany 🇺🇸

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Practice Exam for
University Chemistry 1 Spring 2012 Exam 1
1. Convert 1 g/cm3 to lbs/ft3
28g = 1 ounce, 16 oz = 1lb., 1 in= 2.54 cm, 12 in = 1 ft
A. 631. lbs/ft3
B. 6.31 lbs/ft3
C. 63.1 lbs/ft3
D. 16.4 lbs/ft3
E. 164 lbs/ft3
2. A 2+ ion has 30 neutrons and 24 electrons. What is its correct symbol?
A. 56Cr2+
B. 54Ge2+
C. 59Co2+
D. 56Fe2+
E. 24Fe2+
3. Which of the following is named incorrectly?
A. CCl4 Carbon Tetrachloride
B. N2O4 Dinitrogen Tetroxide
C. Al2O3 Dialuminum Trioxide
D. CS2 Carbon Disulfide
E. SCl2 Sulfur Dichloride
4. Which compound has a correct formula?
A. Al2N3
B. NaPO4
C. Mg(CO3)2
D. Ca2SO4
E. CaSO3
5. What is the mass in pounds of a 225 g object (1 kg = 2.2 lb)
A. 0.495 lbs.
B. 1.52 lbs.
C. 2.02 lbs.
D. 0.225 lbs.
E. 0.766 lbs.
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Download 25 MCQs for Practice Exam 1 - University Chemistry I | CHEM 1103 and more Exams Chemistry in PDF only on Docsity!

Practice Exam for University Chemistry 1 Spring 2012 Exam 1

  1. Convert 1 g/cm^3 to lbs/ft^3 28g = 1 ounce, 16 oz = 1lb., 1 in= 2.54 cm, 12 in = 1 ft A. 631. lbs/ft^3 B. 6.31 lbs/ft^3 C. 63.1 lbs/ft^3 D. 16.4 lbs/ft^3 E. 164 lbs/ft^3
  2. A 2+^ ion has 30 neutrons and 24 electrons. What is its correct symbol? A. 56 Cr2+ B. 54 Ge2+ C. 59 Co2+ D. 56 Fe2+ E. 24 Fe2+
  3. Which of the following is named incorrectly? A. CCl 4 Carbon Tetrachloride B. N 2 O 4 Dinitrogen Tetroxide C. Al 2 O 3 Dialuminum Trioxide D. CS 2 Carbon Disulfide E. SCl 2 Sulfur Dichloride
  4. Which compound has a correct formula? A. Al 2 N 3 B. NaPO 4 C. Mg(CO 3 ) 2 D. Ca 2 SO 4 E. CaSO 3
  5. What is the mass in pounds of a 225 g object (1 kg = 2.2 lb) A. 0.495 lbs. B. 1.52 lbs. C. 2.02 lbs. D. 0.225 lbs. E. 0.766 lbs.
  1. 0.125 L of bromine (d = 3.12 g/ cm^3 ) has what mass? A. 78.0 g B. 390 g C. 0.390 g D. 3.12 g E. 0.0780 g
  2. How many pounds of ethanol does it take to fill the 12.5-gallon fuel tank of an automobile modified to run on ethanol? Given: Density of Ethanol = 0.789 g/mL; 1 kg = 2.205 pounds; 1 gallon = 4 quarts; 1 Liter = 1.057 quarts; A. 82.3 pounds B. 259 pounds C. 12.2 pounds D. 0.110 pounds E. 46.9 pounds
  3. A cube of gold (density = 19.3 g/cm^3 ) measures 11.2 mm on a side. What is its mass? A. 27.1 g B. 216 g C. 21.6 g D. 27.1 kg E. 24.2 g
  4. Which of the following correctly names the acid represented by the formula? A. H 2 S Hydrosulfuric acid B. HNO 2 Nitric acid C. H 2 SO 4 Sulfurous Acid D. HI Hydroiodous acid E. H 2 SO 3 Sulfuric acid
  1. You are asked to determine the perimeter of the cover of your textbook. You measure the length as 51.30 cm and the width as 24.83 cm. How many significant figures should you report for the perimeter? A) 1 B) 2 C) 3 D) 4 E) 5
  2. Convert 80.4 m^3 to cm^3. A) 8.04 × 10^5 cm^3 B) 8.04 × 10^7 cm^3 C) 8.04 × 10^3 cm^3 D) 8.04 × 10–3^ cm^3 E) 8.04 × 10–5^ cm^3
  3. Convert 0.0876 ft^3 to L. (2.54 cm = 1 in., 1 L = 1 dm^3 ) A) 2.48 x 10^1 L B) 2.48 L C) 2.67 x 10–3^ L D) 3.09 x 10–3^ L E) 2.87 L
  4. It is estimated that uranium is relatively common in the earth's crust, occurring in amounts of 4 g / metric ton. A metric ton is 1000 kg. At this concentration, what mass of uranium is present in 1.5 mg of the earth's crust? A) 6 ng B) 6 g C) 6 mg D) 6 x 10–5^ g E) 6 cg
  5. During a physics experiment, an electron is accelerated to 65 percent of the speed of light. What is the speed of the electron in miles per hour? (speed of light = 3.00 x 10^8 m/s, 1 km = 0.6214 mi) A) 2.0 × 10^8 mi/h B) 4.4 × 10^11 mi/h C) 6.7 × 10^8 mi/h D) 7.3 × 10^6 mi/h E) 4.4 × 10^8 mi/h
  1. Manganese makes up 1.3 x 10–4^ percent by mass of the elements found in a normal healthy body. How many grams of manganese would be found in the body of a person weighing 214 lb? (2.205 lb = 1 kg) A) 0.61 g B) 0.13 g C) 13 g D) 61 g E) 1.3 x 10–4^ g
  2. In 1928, 55.7 g of a new element was isolated from 660 kg of the ore molybdenite. The percent by mass of this element in the ore was: A) 84 % B) 6.6 % C) 55.7 % D) 0.0084 % E) 36.8 %
  3. A monolayer containing 3.24 x 10–6^ g of oleic acid has an area of 20.0 cm^2. The density of oleic acid is 0.895 g / mL. What is the thickness of the monolayer (the length of an oleic acid molecule)? A) 7.24x 10–5^ cm B) 5.52 x 10–6^ cm C) 5.80 x 10–5^ cm D) 1.81 x 10–7cm E) 1.45 x 10–7^ cm
  4. A piece of nickel with a mass of 14.25 g is submerged in 46.3 cm^3 of water in a graduated cylinder. The water level increases to 47.9 cm^3. The correct value for the density of nickel from these data is: A) 8.908 g/cm^3 B) 8.9 g/cm^3 C) 0.11 g/cm^3 D) 0.298 g/cm^3 E) 3.36 g/cm^3
  5. Suppose that you purchased a water bed with the dimensions 2.55 m x 2.53 dm x 211 cm. What mass of water does this bed contain (d of water = 1 g/mL)? A) 1.36 x 10^3 g B) 1.36 x 10^4 g C) 1.36 x 10^5 g D) 1.36 x 10^8 g