Chemistry Questions

Part I: 1. How many microliters are in 4567 mL write your answer in scientific notation. 2. If it takes 40 drops to make 1 milliliter, how many microliters are there per drop? 3. If I measure my big screen TV and get 67789.85 centimeters, which numeral is estimated? How many millimeters is it? 4. What is the name of Mg(NO3)2? 5. What is the formula for Lithium sulfate? 6. What is the formula for iron II phosphate? 7. How many protons and neutrons are in Magnesium with an atomic mass of 28? 8. If I add more and more HCl to a solution, what will happen to the pOH? 9. How many kilojoules of heat energy does it take to change the temperature of 50 grams of water from 20°C to 24°C? 10. If I have 5 grams of NaCl in 5 Liters of water, what is the molarity? 11. What is the molar mass of Ca(NO3)2? 12. How many moles of CO2 would be made if you have 4 moles of C3H8 (and it went to full combustion)? C3H8 + 5O2 -> 3CO2 +4H2O 13. How many electrons are in the valence shell of K, potassium? 14. What is the product when 3 pentanol is oxidized? 15. What are the products when 1 butanol undergoes alcohol dehydration? 16. What is the product when 1 butanol and methanoic acid combine? 17. How many TOTAL carbons does 3 ethyl 6 methyl octane have? 18.What part of cellular respiration makes the most ATP? 19. What products of the Kreb’s (Citric acid) cycle are used by the electron transport chain? 20. If mRNA is AUGAAAUAC, what amino acids will it code for? 21. What is the name of CH3-CH2-CH=CH2. What is the product if it undergoes hydrogenation? 22. How many oxygens are in an ether? 23. How many carbons are in N,N ethyl methyl amine? 24. If the atomic number changes from 7 to 6, what type of radiation is released? 25. If there are 4 years in a half-life, how much radioactivity will be left after 36 years? 26. What type of radioactivity would change the proton number by 2 and the atomic mass by 4? 27. Which would give more total energy? 10 grams of protein, 10 grams of carbohydrates, or 10 grams of lipids? 28. Which has a higher specific heat, 10 grams of substance A that does not change temperature when put in the fridge, or 10 grams of substance B that cools down quickly. 29. If I have 4 Liters of gas and double the pressure, what is the new volume? 30. What is the total pressure of a tank with 2 atm O2, 3 atm N2, and 1 atm H2? 31. If I have an oil that is liquid at room temperature, what chemical process would make it more solid at room temperature? Part II: 1. How many protons, electrons and neutrons are in an atom of ? a. 4 protons, 5 electrons, and 9 neutrons b. 4 protons, 4 electrons, and 5 neutrons c. 9 protons, 9 electrons, and 4 neutrons d. 5 protons, 4 electrons, and 4neutrons e. 6 protons, 5 electrons, and 5 neutrons 2. Two Isotopes will have a. same proton number b. same electron number c. same neutron number d. none of the above 3. Which of the following properties is NOT a characteristic of the Group 1A(1) elements (alkali metals)? a. They are shiny. b. They are good conductors of heat. c. They react vigorously with water. d. Most of them are liquids at room temperature. e. They are good conductors of electricity. 4. Which compound contains a polar covalent bond? a. NaCl b. Cl2 c. H2 d. HCl 9 4Be 5. The correct electron dot structure for ammonia, NH3, is a. I b. II c. III d. IV 6. Which of the following measurements has three significant figures? a. 0.005 m b. 510 m c. 5.10 x 10-1 m d. 5.1 x 10-2 m e. 5100 m 7. If a block of wood has a mass of 1.326 kg, what is its mass in milligrams? a. 1.326 x 10-6 mg b. 0.1326 mg c. 1.326 x 103 mg d. 1.326 x 106 mg 8. Which is a physical change? a. Steam is condensed to water. b. Water is decomposed by an electric current. c. Iron rusts in air. d. A piece of paper is burned. 9. How many moles is 10. g of calcium carbonate, CaCO3? a. 0.010 mol b. 0.10 mol c. 1.0 mol d. 10. mol 10. A sample of gas with a volume of 2.0 L exerts a pressure of 1.0 atm. If the volume is changed to 1.0 L (at constant temperature), what is the pressure? a. 0.5 atm b. 1.0 atm c. 2.0 atm d. 4.0 atm 11. Calculate the molarity of a solution prepared by diluting 200.0 mL of 4.0 M HCl to 500.0 mL of solution a. 1.1 M b. 1.6 M c. 2.7 M d. 10. M 12. Which represents an acid solution at 25°C? a. pH = 7 b. pH = 3 c. [OH- ] = 1.8 x 10-7 d. [H3O+] = 6.7 x 10-8 13. The function of a buffer is to a. change color at the end point of a titration. b. maintain the pH of a solution. c. be a strong base. d. maintain a neutral pH. e. act as a strong acid. 14. What type of radiation is represented by ? a. alpha b. gamma c. beta d. positron 15. If emits an alpha particle, what is the other product? a. b. c. d. 16. A hydrocarbon containing one double bond per molecule is called a(n) ____. a. alkene b. alkyne c. alkane d. cyclic hydrocarbon e. saturated hydrocarbon 0 1 e  238 92U 239 93Np 235 92U 234 90Th 226 86Ra 17. Curcumin is a compound found in tumeric. What functional group is not present in curcumin? a. phenol b. aldehyde c. ether d. ketone 18. Oxidation of which type of biomolecule provides the greatest energy per gram? a. protein b. lipid c. carbohydrate d. nucleic acid 19. Mammals can digest starch but not cellulose because starch a. has alpha (1 -> 4) linkages joining glucose units, whereas cellulose has beta (1 -> 4) linkages. b. is a poly-glucose, whereas cellulose is a poly-galactose. c. is a carbohydrate, but cellulose is a protein. d. is made by mammals, but cellulose is made by plants. 20. A difference between RNA and DNA is that a. RNA contains deoxyribose and DNA contains ribose. b. RNA contains cytosine and DNA contains uracil. c. RNA contains uracil and DNA contains thymine d. RNA has a double helix and DNA has a single strand