Exam 4: How Chemists Use Numbers
Exam 1: Atoms and Elements50 Questions
Exam 2: Electrons and the Periodic Table107 Questions
Exam 3: Compounds and Chemical Bonds63 Questions
Exam 4: How Chemists Use Numbers43 Questions
Exam 5: The Mole and Chemical Formulas60 Questions
Exam 6: Molecular Shape71 Questions
Exam 7: Solids, Liquids, and Phase Changes58 Questions
Exam 8: Gases60 Questions
Exam 9: Physical Properties of Solutions62 Questions
Exam 10: Chemical Reactions and Chemical Equations65 Questions
Exam 11: Using Balanced Chemical Equations61 Questions
Exam 12: Acids and Bases65 Questions
Exam 13: Equilibrium30 Questions
Exam 14: Organic Chemistry46 Questions
Exam 15: Biochemistry20 Questions
Exam 16: Nuclear Chemistry38 Questions
Exam 17: Electrochemistry30 Questions
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If the temperature is 38.0°F then what is the temperature in kelvins?
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Correct Answer:
C
The mass of a sample is 550 milligrams.Which of the following expresses that mass in kilograms?
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The distance between carbon atoms in ethylene is 134 picometers.Which of the following expresses that distance in meters?
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If an electron has an acceleration of 2.33 × 102 m/sec2, what is this value in units of m/min2?
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Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =
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The diameter of Earth is 12.7 Mm.Express this diameter in centimeters.
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The dark meat of a 20-pound turkey requires an internal temperature of 180°F to be fully cooked.What minimum temperature reading should be displayed on a food thermometer that only measures in degrees Celsius?
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Select the answer that expresses the result of this calculation with the correct number of significant figures. 13.602 × 1.90 × 3.06
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× 1)4097
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A flask has a mass of 78.23 g when empty and 593.63 g when filled with water.When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g.What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the temperature of the measurement.)
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What is the volume in milliliters of a 32.0 fl oz can of juice? (1 fl oz = 29.6 mL)
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What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm3?
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The boiling point for liquid nitrogen is 77 K.What is the temperature in degrees Fahrenheit?
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What unit would be most appropriate when reporting the volume 5.23 × 10−6 L?
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If a patient in the hospital is running a temperature of 39.5°C, what is this in degrees Fahrenheit?
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