Chem 133 - Study guides, Class notes & Summaries

CHEM 133 Midterm Exam Questions and Answers- American Public University Winter 2024

Thanks for your submission. Please carefully review the questions you got wrong and let me know what still puzzles you so I can help explain it. Part 1 of 11 - 0.0/ 0.0 Points No Questions Part 2 of 11 - Multiple Choice - Chapter 01 8.0/ 10.0 Points Question 1 of 35 2.0/ 2.0 Points A piece of antimony with a mass of 17.41 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 48.9 cm3 . The correct value for the density of antimony from these data is:...

Based on the solubility rules, which of the following compounds should be insoluble in water? Question options: ZnCl2 MgBr2 NaCl AgBr FeCl2 View Feedback 4 / 4 points What is the molar concentration of sodium ions in a 0.350 M Na 3PO4 solution? Question options: 0.350 M 1.05 M 1.40 M 0.117 M View Feedback 4 / 4 points For which compound does 0.256 mole weigh 12.8 g? Question options: CH3Cl C2H4O C2H6 CO2 none of these choices View Feedback 4 / 4 points What is the molec...

Based on the solubility rules, which of the following compounds should be insoluble in water? Question options: ZnCl2 MgBr2 NaCl AgBr FeCl2 View Feedback 4 / 4 points What is the molar concentration of sodium ions in a 0.350 M Na 3PO4 solution? Question options: 0.350 M 1.05 M 1.40 M 0.117 M View Feedback 4 / 4 points For which compound does 0.256 mole weigh 12.8 g? Question options: CH3Cl C2H4O C2H6 CO2 none of these choices View Feedback 4 / 4 points What is the molec...

The electron configuration for the carbon atom is: Question options: 1s 2 2p 4 [Ne]2s 2 2p 2 1s 2 2s 2 2p 2 [He]2s 4 View Feedback 4 / 4 points What is the de Broglie wavelength of a 300 g object moving at a velocity of 50 m/s? Question options: 4 × 10-38m 4 × 10-35m 4 × 1012 m 4 × 109 m View Feedback 4 / 4 points Calculate the energy, in joules, required to excite a hydrogen atom by causing an electronic transition from the n = 1 to the n = 4 principal energy l...

What molality of pentane solution is obtained by dissolving 5.0 g pentane, C5H12, in 245.0 g hexane, C6H14? Enter your answer with two decimal places and no units. Molar mass pentane: 72.15 g/mol Molar mass hexane: 86.18 g/mol - 0.28 5 g pentane x (1 mol/ 72 g)= 0.069 mol pentane 245g > .245 kg hexane 0.069 mol/ .245= 0.28 If an aqueous CsCl solution is 7.28% CsCl (by mass) and has a density of 1.05 g/mL at 20.°C,what is the expected boiling point of the solution? Kb = 0.51°C/m for ...

Lesson 5 Quiz 4 / 4 points What is the bond order of He2 +? Question options: 0.0 1.5 0.5 1.0 2.0 View Feedback 4 / 4 points Which molecule contains a triple bond? Question options: HCN H2CO O3 F2 View Feedback 4 / 4 points The configuration (σ2s) 2 (σ2s*)2 (π2p) 2 is the molecular orbital electron configuration for the ground state of: Question options: B2 Li2 + C2 B2 2– Be2 View Feedback 4 / 4 points The total number of bonding electrons in a molecule ...

Lesson 6 Quiz 4 / 4 points Most people don't realize that once something starts to melt, cranking up the heat does't make the temperature of the substance higher, at least not until it is ALL melted. When you add lots of extra heat to a solid that is in the process of melting, what ends up happening to all of this extra energy you are adding? It is used to do what? Question options: expand the solid. change solid to liquid. change the liquid back to solid. overcome the intermolecula...

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CHEM 133 FINAL EXAM SPRING 2023/2024 WITH VERIFIED SOLUTIONS GRADED A+