Chemistry (Cliffs AP) by Gary S. Thorpe

By Gary S. Thorpe

CliffsAP learn publications assist you achieve an side on complex Placement* checks. assessment workouts, reasonable perform tests, and potent test-taking innovations are the major to calmer nerves and better AP* ratings. CliffsAP Chemistry is for college kids who're enrolled in AP Chemistry or who're getting ready for the complicated Placement exam in Chemistry. within, you’ll locate tricks for answering the essay and multiple-choice sections, a transparent clarification of the examination layout, experiences of all 22 required labs, a glance at how tests are graded, and extra: lifelike full-length perform examination solutions to frequently asked questions about the AP Chemistry examination research recommendations that can assist you arrange Thorough overview of the most important themes which are certain to be at the attempt pattern laboratory write-ups The AP Chemistry examination is bobbing up! Your thorough knowing of months and months of college-level chemistry coursework is set to be evaluated in a 3-hour exam. CliffsAP Chemistry comprises the subsequent fabric to you do some of the best task attainable at the significant attempt: Gravimetrics digital constitution of atoms Covalent bonding and ionic bonding Acids and bases relief and oxidation Organice chemistry and nuclear chemistry Writing and predicting chemical reactions This complete consultant bargains an intensive evaluation of key strategies and designated solution reasons. It’s all you must do your top — and get the school credit you deserve. *Advanced Placement application and AP are registered emblems of the varsity Board, which used to be now not enthusiastic about the construction of, and doesn't advocate this product.

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What is the formula of a compound formed by combining 50. ) and 32 grams of oxygen gas? A. XO2 B. XO4 C. X4O D. X2O E. 50 mole of element X (50. g/100. 50 mole). 0 moles of oxygen atoms. 0 molar ratio is the same as a 1:4 molar ratio, so the answer is XO4. 30 Gravimetrics 9. 8% X by mass. Which of the following would you use to determine the atomic mass of X? 8 B. 8 C. 8 D. 2 m c 2 m A. E. 2% oxygen by weight. 0 moles of O atoms). 0) × 2/7 mole of X. 0 m c 7 m Finding the solution is unnecessary for selecting an answer; however, here is the solution for your information.

A. After the student weighed the hydrate, a piece of rust fell from the tongs into the crucible. B. Moisture driven from the hydrate condensed on the inside of the crucible cover before the student weighed the anhydride. C. All the weighings were made on a balance that was high by 10%. D. The original sample contained some anhydrous copper(II) sulfate. E. The original sample was wet. Answer: E 30% H2O in the hydrate sample represents mass of hydrate - mass of anhydride # 100% mass of hydrate In a problem like this, I like to make up some easy fictitious numbers that I can use to fit the scenarios and see how the various changes affect the final outcome.

02 C. 02 D. 100 E. 14 g C H # 1 mole C H # 1 mole H O = g H 2 O 1 4 10 4 10 2 33 Part II: Specific Topics 12. Element Q occurs in compounds X, Y, and Z. 00 Element Q is most likely: A. N B. O C. F D. Ir E. 00 (fluorine). Use the law of multiple proportions. 13. Which one of the following represents an intensive property? A. temperature B. mass C. volume D. length E. heat capacity Answer: A The measured value of an intensive property does NOT depend on how much matter is being considered. The formula for heat capacity C is C = m ⋅ Cp, where m = mass and Cp = specific heat.

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