Chem 129 - Study guides, Class notes & Summaries

Chem 129 multiple choice exam 1 Questions And Answers (Verified And Updated) The percent composistion by mass of a compound is 79% C, 12.8% H, and 11% O. The molar mass of this compound is 284.5 g/mol. What is the molecular formula of the compound? - C10H6O -C9H18O -C16H28O4 -C20H12O2 -C18H36O2 - answerC18H36O2 (check molar mass then [molar mass * amount of species/ molar mass of whole compound]) How many moles of aspirin, C9H8O4, are in 325 mg tablet? - answer0.0018 moles (turn 325 i...

45. A nurse is discussing organ donation with the parents of a school age child who has sustained brain death due to a bicycling accident. Which of the following actions should the nurse take first? 46. A nurse is planning an educational program for school age children and their parents about bicycle safety. Which of the following information should the nurse plan to include? 47. A nurse is caring for a school age child who is receiving chem and is severely immune-compromised. Which of t...

CHEM 214 General Chemistry II Lab - Experiment 009: Solubility Product Constant (Ksp) and Common-Ion Effect. Experiment 009: Solubility Product Constant (Ksp) and Common-Ion Effect References: Suz anne Slayden, 2018, Chemistry 213, 214, 272 Laboratory Experiments, 7th Edition, pages 222-230. George Mason University, Department of Chemistry and Biochemistry. Solubility Product; 2020. Solubility Product, Distance Learning Summer 2020, accessed via Blackboard. CRC Handbook of Chemistry and Physics,...

1. For lower premolars, the purpose of inclining the handpiece lingually is to, A. Avoid buccal pulp horn B. Avoid lingual pulp horn C. Remove unsupported enamel D. Conserve lingual dentine - ANSWER A. Avoid buccal pulp horn Explanation 1- avoid BUCCAL pulp horn 2- conserve ling. dentine So take A and B if available 2. For an amalgam restoration of a weakened cusp you should, A. reduce cusp by 2mm on a flat base for more resistance B. reduce cusp by 2mm following the outli...

CHEM 129 EXAM 3 Questions With 100% Correct Answers Acids and bases are usually demoted as strong or weak, what's the difference? - answer- Strong acids and bases - reaction with water is approximately 100% - Weak acids and bases - reaction with water is much less than 100% What does acid and base strength not dictate? - answerAcid or base strength is not a measure of concentration What are some examples of strong acids? - answerHNO3, HCl, H2SO4 and HClO4 are strong acids What are ele...

1. The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following, a more efficient centrifugal compressor operation results from Answer: Lowering the condensing pressure 2. The heat removed from the refrigerant in a condenser is Answer: Sensible and Latent Heat 3. The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You have been assigned to withdraw refrigerant for storage in suitable containers. Accord...

CHEM 129 Final Exam Questions And Answers (Verified And Updated) Calculate the molar solubility of Calcium Sulfate with a Ksp=2.4x10^-5 - answerHINT: just an ICE Table x= 4.89x10^-3 Calculate the solubility of Aluminum hydroxide with Ksp=3x10^24 - answerx= 7.59x10^-7 Given the solubility of copper (1) Chloride is 4.31mg/100ml, what is the Ksp? - answerKsp=1.89x10^-7 What is the solubility product for each of the following reactions? Silver Iodine Calcium Carbondate Magnesium Hydroxide...

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Common Nomenclature Chem 129 Hydroxide - answerOH- Cyanide - answerCN- Nitrate - answerNO3- Nitrite - answerNO2- Sulfate - answerSO4 (2-) Sulfite - answerSO3 (2-) Phosphate - answerPO4 (3-) Carbonate - answerCO3 (2-)