Exam 1: Chemistry Basics - Matter and Measurement
Exam 1: Chemistry Basics - Matter and Measurement75 Questions
Exam 2: Atoms and Radioactivity76 Questions
Exam 3: Compounds - Putting Particles Together107 Questions
Exam 4: Introduction to Organic Compounds102 Questions
Exam 5: Chemical Reactions83 Questions
Exam 6: Carbohydrates - Lifes Sweet Molecules104 Questions
Exam 7: Whats the Attraction State Changes, Solubility, and Lipids83 Questions
Exam 8: Solution Chemistry: How Sweet Is Your Tea90 Questions
Exam 9: Acids, Bases, and Buffers in the Body80 Questions
Exam 10: Proteins - Workers of the Cell104 Questions
Exam 11: Nucleic Acids - Big Molecules With a Big Role84 Questions
Exam 12: Food As Fuel - A Metabolic Overview90 Questions
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Write the total number of atoms in each of the following formulas.
A)CuSO4.5H2O
B)(NH4)3PO4
C)C6H4(CH3)(C2H5)?
D)AlO(NO3)2
E)Fe3(PO4)2
(Short Answer)
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Which of the following combinations represents only alkali metals?
I. Li
II. Ba
III. Rb
IV. Ca
(Multiple Choice)
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Calculate the percentage by mass of the active ingredient in an antacid tablet that weighs 1.36 g if it contains 520 mg of calcium carbonate.
(Short Answer)
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Round the following number to 3 significant figures: 546.85 grams
(Multiple Choice)
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Rewrite the following as ordinary numbers:
A)6.75 × 105
B)4.66 × 10-4
C)2.020 × 103
D)1.11 × 10-2
E)23 × 10-5
(Short Answer)
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What is the percent by mass of salt in a mixture that contains 150 g of salt, 1.2 kg of flour and 650 g of sugar?
(Multiple Choice)
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Convert the following temperatures to the indicated units:
A)549 °F to °C
B)254 K to °C
C)947 K to °F
D)84°C to °F
E)236°F to K
(Short Answer)
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Which of the following conversion factors is correct for converting from grams to kilogram?
(Multiple Choice)
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What is the number of significant figures in each of the following numbers?
A)20.03 kg ________
B)190. L ________
C)120 M ________
D)0.00067 cm3 ________
E)0.0580 in ________
F)35,500 people ________
D)0.00067 cm3 ________
(Short Answer)
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