1 2 How many significant figures are in the measured quantity below 0 03080 a 2 b 3 c 4 d 5 e 6 A student determined the mass of a sample contained in a beaker by subtracting the mass of the beaker alone 53 82 g from the mass of the beaker containing the sample 55 652 g How many significant figures should be reported for the mass of the sample a b c d e 3 1 2 3 4 5 Perform the calculation below How should the result of this calculation be expressed taking into account the appropriate use of significant figures 17 925 5 32 4 9273 a b c d e 4 2 6 2 56 2 558 2 5582 2 55820 When the following calculation is performed how many significant figures should the answer have a b c d e 5 1 2 3 4 5 Perform the calculation below How should the result of this calculation be expressed taking into account the appropriate use of significant figures 7 8 x 10 7 8 69 x 10 6 9 923 x 10 5 a b c d e 6 1 1 x 10 4 1 09 x 10 4 1 087 x10 4 1 0870 x10 4 1 08700 x 10 4 Perform the calculation below How should the result of this calculation be expressed taking into account the appropriate use of significant figures 8 67 x 10 5 9 7325 x 10 4 2 742 x 10 6 a b c d e 1 06 x 10 3 1 063 x 10 3 1 0627 x 10 3 1 06269 x 10 3 1 062692 x 10 3 7 What is the SI unit of mass a kg b g c N d amu e lb 8 Convert 0 755 dL to L a 7 55 x 104 L b 7 55 x 105 L c 7 55 x 106 L d 7 55 x 10 5 L e 7 55 x 10 6 L 9 Convert 4 25 mL to L a b c d e 4 25 x 10 4 L 4 25 x 10 3 L 4 25 x 102 L 4 25 x 103 L 4 25 x 104 L 10 A small hole in the wing of the space shuttle requires a 27 2 cm2 patch What is the patch s area in square inches a 0 237 in2 b 4 22 in2 c 10 7 in2 d 17 5 in2 e 69 1 in2 11 Pure gold has a density of 18 9 g cm3 Express this density in units of lb ft3 a b c d e 1 18 x 106 lb ft3 1 27 x 103 lb ft3 1 27 lb ft3 819 lb ft3 1 18 x 103 lb ft3 12 The density of ethanol is 0 789 g mL Express the value in units of lbs ft3 a 5 30 lbs ft3 b 49 3 lbs ft3 c 53 0 lbs ft3 d 279 lbs ft3 e 82 2 lbs ft3 13 Convert 70 0 mi hr to m s 1 mi 1 6093 km a b c d e 29 2 m s 31 3 m s 37 6 m s 157 m s 406 m s 14 A certain liquid has a density of 2 67 g mL What volume in L would 1340 g of this liquid occupy a b c d e 2 00 x 10 3 L 50 2 L 3 58 L 35 8 L 0 502 L 15 An empty Erlenmeyer flask weighs 144 5 g When completely filled with water density 1 00 g cm3 the flask and its contents weigh 219 4 g The water is removed and the flask is completely filled with chloroform density 1 48 g cm3 What is the total mass of the flask and its contents when the flask is filled with chloroform a 358 g b 325 g c 255 g d 198 g e 111 g 16 The density of magnesium is 1 74 g cm3 What is the volume of 275 g of this metal a 395 cm3 b 479 cm3 c 158 cm3 d 522 cm3 e 633 cm3 17 Ernest Rutherford and his coworkers performed an experiment that led to the downfall of the plum pudding model of the atom This experiment involved measuring a the scattering of alpha particles by a thin gold foil b the rate of fall of charged oil drops c the effects of magnetic and electric fields on the cathode rays in a cathode ray tube 18 An element s most stable ion forms an ionic compound with chlorine having the formula XCl3 If the ion of element X has a mass number of 27 and has 10 electrons how many neutrons does it have a 12 b 10 c 17 d 14 e 13 19 How many protons neutrons and electrons are present in 56Fe2 neutrons electrons protons a 26 30 28 b 26 56 28 c 26 56 24 d 26 30 24 e 56 26 28 20 Which of the following symbol name combinations is incorrect a Au gold b K potassium c Na natrium d Cu copper e Pb lead 21 Which of the elements below is an alkaline earth metal a K b Mg c Fe d Al e Si 22 Which of the compounds listed below is are ionic I Cu NO3 2 II PCl3 III HBr IV NH4 2SO3 a I only b I and IV c I III and IV d I and III e II III and IV 23 What is the formula for aluminum bisulfite a b c d e AlHSO3 Al2 HSO3 3 Al HSO3 3 Al2 SO3 3 Al3 SO3 2 24 The correct name for FePO4 is a iron I phosphate b iron II phosphide c iron II phosphite d iron III phosphate e iron III perphosphate 25 What is the correct name of PbO2 a monolead dioxide b lead dioxide c lead II dioxide d lead II oxide e lead IV oxide 26 Which of the compounds below has the correct formula written next to it I II III IV V a b c d e mercury I chloride HgCl ammonium periodate NH4IO4 hydrosulfuric acid H2S iron III oxide Fe3O2 magnesium bicarbonate MgHCO3 I and V II and III II only II III and IV I II IV and V 27 Which of the following formula name combinations is incorrect a b c d e BaPO4 MnO2 Hg2Cl2 K2CO3 CuCl barium phosphate manganese IV oxide mercury I chloride potassium carbonate copper I chloride 28 Which of the following acids is incorrectly named sulfuric acid a H2SO4 chlorous acid b HClO3 nitrous acid c HNO2 d HCl hydrochloric acid phosphorous acid e H3PO3 29 Which of the substances below exists as stable diatomic molecules a Al b B c C d S e I 30 The average atomic mass of carbon is 12 011 Assuming that you were able to pick up only one carbon atom the chance that you would randomly choose one with a …