CHEM133

American Public University

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CHEM133 Week 6 Lesson 3 Quiz
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16

oktober 2023

2023/2024
1. Question: What is the wavelength of radiation that has a frequency of 5.39 × 1014 s–1? 2. Question: What is the wavelength of a photon of red light (nm) whose frequency is 4.64 x 1014 Hz? 3. Question: Which one of the following sets of quantum numbers is not possible? 4. Question: In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus: 5. Question: Calculate the wavelength of a neutron that has a velocity of 250 cm/s...
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CHEM133 Week 4 Lesson 2 Quiz
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10

oktober 2023

2023/2024
1. Question: If 0.274 moles of a substance weighs 62.5 g, what is the molar mass of the substance, in units of 2. Question: What volume of 18 M sulfuric acid must be used to prepare 1.80 L of 0.215 M H2SO4? 3. Question: What is the molecular mass of Br2? 4. Question: What is the molar concentration of sulfate ions in a 0.150 M Na2SO4 solution? 5. Question: How many moles of hydrogen chloride are contained in a 52.6 g sample of this gas? 6. Question: 1.00 mole of O2 contains the same number ...
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CHEM133 Week 2 Lesson 1 Quiz
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9

oktober 2023

2023/2024
1. Question: How many of the following numbers contain 3 significant figures? 2. Question: The melting point of picolinic acid is 136.5°C. What is the melting point of picolinic acid on the Fahrenheit scale? 3. Question: An aluminum can contain 12.0 fluid ounces of liquid. Express this volume in liters. (1 fl oz = 29.6 mL) 4. Question: An aluminum can contain 12.0 fluid ounces of liquid. Express this volume in liters. (1 fl oz = 29.6 mL) 5. Question: In 1828, the diameter of the U.S. dime w...
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Voordeelbundel

CHEM133 Full Course Lesson Quiz, Midterm & Final Exams (Package Deal)
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13

oktober 2023
CHEM133 Full Course Lesson Quiz, Midterm & Final Exams (Package Deal)
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CHEM133 Week 16 Final Exam (Spring)
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19

oktober 2023

2023/2024

A+
1. Question: Calculate the lattice energy of NaBr(s), given the following thermochemical equations, where ΔIE and ΔEA are ionization energy and electron affinity, respectively. 2. Question: In which case is the bond polarity incorrect? 3. Question: The phosphorus atom in PCl3 would be expected to have a 4. Question: Which of the following bonds would be the most polar without being considered ionic? 5. Question: Calculate the standard enthalpy of formation (ΔHformation) for LiCl(s) given ...
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CHEM133 Week 15 Lesson 7 Quiz
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19

oktober 2023

2023/2024

A+
1. Question: A sample of oxygen gas has a volume of 3.52 L at 27°C and 800.0 torr. How many oxygen molecules does it contain? 2. Question: Consider a sample of gas in a container on a comfortable spring day. The Celsius temperature suddenly doubles, and you transfer the gas to a container with twice the volume of the first container. If the original pressure was 12 atm, what is a good estimate for the new pressure? 3. Question: Gas A and gas B are combined in a flask at initial pressures of 1...
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