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# CHEM 110 Midterm #1 Study Guide CHEM 110

UW

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This 16 page Study Guide was uploaded by Sarah Garcia on Thursday October 22, 2015. The Study Guide belongs to CHEM 110 at University of Washington taught by Colleen Craig in Summer 2015. Since its upload, it has received 54 views. For similar materials see Intro to Gen Chem in Science at University of Washington.

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Date Created: 10/22/15

CHEM 110 Midterm 1 STUDY GUIDE 1 How many sig figs a 540 b 30000 c 2500 d 14895 e 00010 f 3504 2 0004708 X 0050 3 15004 00009 4 34 113000874 5 Convert the following to scientific notation a 12 8763 b 000023823 c 9100 6 Convert the following to standard format a 36 x 10395 b 212 x 105 c 649 x 10 7 Choose the larger number a 49 x 10393 or 55 x 10399 b 1250 or 34 x 102 c 0000000004 or 5 x 10398 8 Complete the following metric relationships a 1kg g b 1 L dL o 1Mm m d 1 M8 g e 1nL L f 1cm m 10 11 12 13 14 15 Which is the smaller unit a kg or ng b pm or mm c kg or mg Rewrite with an SI prefix so the result is between 1 and 1000 a 809 x 103 m b 475 x 108 L c 56 x 10395 g d 41 x 1011 nL How many feet are there in one meter An iron sample has a mass of 450 lb What is the mass of this sample in grams 1 kg22046 lbs 1 kg1000 g Convert 442 C to kelvins Convert 10 F to Celsius Convert 179 K to Fahrenheit 16 A block has a volume of 0253 L Its mass is 217 g What is the density of the block in gcm3 17 Copper has a density of 896 gcm3 A sample of copper is added to 500 ml of water in a graduated cylinder and the levels rise to 837 mL What is the mass of the copper 18 How many angstroms A are there in 00874 mi 19 A rectangular copper block has dimensions 65 cm x 30 cm x 40 cm What is the volume of the block in a cm3 b in3 20 In SI units the density of a brick is 1900 kgm3 Convert this density to gcm3 21 Name Symbol protons electrons neutrons Cobalt60 60Co 27 Uranium238 238U 92 Chlorine37 37Cl39 Anion 17 Copper63 63Cu2 Cation 29 Copper65 65Cu2 Cation 29 22 Two isotopes of copper are naturally occurring with copper63 6293 amu at 6909 and copper65 6493 amu at 3091 Calculate the average atomic mass of copper 23 Indium in average atomic mass 1148 amu consists of two naturallyoccurring isotopes indium113 and indium115 If 430 of a sample of indium is indium113 which has a mass of 11290 amu what is the mass of indium115 24 Select the element that is most likely to become an anion during a chemical reaction a b c d Hydrogen Tungsten Germanium Bromine 25 The Period 3 element that forms an ion with charge 2 is a b c d e Oxygen Magnesium Argon Sulfur Chlorine 26 Which is most likely to become a cation as a result of a chemical reaction What would be the charge on that cation a b c d e N Se Ne Na F 27 A certain ion X contains 54 electrons and 78 neutrons What are the mass number of and identity of this ion 28 A compound contains an unknown ion X and has the formula XClz on X contains 20 electrons What is the identity of X 29 Draw the Lewis structure for methane CH4 30 Craw the Lewis structure for dichlorine monoxide CIZO 31 Draw the Lewis structure for water H20 32 Draw the Lewis structure for hydroxide ion OH39 33 Draw the Lewis structure for dichoromethane H2CC2 34 Draw the Lewis structure for carbon dioxide C02 35 Draw the Lewis structure for carbon monoxide CO 36 Draw the Lewis structure for formaldehyde HZCO 37 Draw all the resonance structures for the nitrate ion N0339 N is the central atom 38 Draw a the resonance structures for dinitrogen oxide N20 N is the central atom CHEM 110 Midterm 1 STUDY GUIDE 1 How many sig figs a 540 b 30000 c 2500 d 14895 e 00010 f 3504 2 0004708 X 0050 3 15004 00009 4 34 113000874 5 Convert the following to scientific notation a 12 8763 b 000023823 c 9100 6 Convert the following to standard format a 36 x 10395 b 212 x 105 c 649 x 10 7 Choose the larger number a 49 x 10393 or 55 x 10399 b 1250 or 34 x 102 c 0000000004 or 5 x 10398 8 Complete the following metric relationships a 1kg g b 1 L dL o 1Mm m d 1 M8 g e 1nL L f 1cm m 10 11 12 13 14 15 Which is the smaller unit a kg or ng b pm or mm c kg or mg Rewrite with an SI prefix so the result is between 1 and 1000 a 809 x 103 m b 475 x 108 L c 56 x 10395 g d 41 x 1011 nL How many feet are there in one meter An iron sample has a mass of 450 lb What is the mass of this sample in grams 1 kg22046 lbs 1 kg1000 g Convert 442 C to kelvins Convert 10 F to Celsius Convert 179 K to Fahrenheit 16 A block has a volume of 0253 L Its mass is 217 g What is the density of the block in gcm3 17 Copper has a density of 896 gcm3 A sample of copper is added to 500 ml of water in a graduated cylinder and the levels rise to 837 mL What is the mass of the copper 18 How many angstroms A are there in 00874 mi 19 A rectangular copper block has dimensions 65 cm x 30 cm x 40 cm What is the volume of the block in a cm3 b in3 20 In SI units the density of a brick is 1900 kgm3 Convert this density to gcm3 21 Name Symbol protons electrons neutrons Cobalt60 60Co 27 Uranium238 238U 92 Chlorine37 37Cl39 Anion 17 Copper63 63Cu2 Cation 29 Copper65 65Cu2 Cation 29 22 Two isotopes of copper are naturally occurring with copper63 6293 amu at 6909 and copper65 6493 amu at 3091 Calculate the average atomic mass of copper 23 Indium in average atomic mass 1148 amu consists of two naturallyoccurring isotopes indium113 and indium115 If 430 of a sample of indium is indium113 which has a mass of 11290 amu what is the mass of indium115 24 Select the element that is most likely to become an anion during a chemical reaction a b c d Hydrogen Tungsten Germanium Bromine 25 The Period 3 element that forms an ion with charge 2 is a b c d e Oxygen Magnesium Argon Sulfur Chlorine 26 Which is most likely to become a cation as a result of a chemical reaction What would be the charge on that cation a b c d e N Se Ne Na F 27 A certain ion X contains 54 electrons and 78 neutrons What are the mass number of and identity of this ion 28 A compound contains an unknown ion X and has the formula XClz on X contains 20 electrons What is the identity of X 29 Draw the Lewis structure for methane CH4 30 Craw the Lewis structure for dichlorine monoxide CIZO 31 Draw the Lewis structure for water H20 32 Draw the Lewis structure for hydroxide ion OH39 33 Draw the Lewis structure for dichoromethane H2CC2 34 Draw the Lewis structure for carbon dioxide C02 35 Draw the Lewis structure for carbon monoxide CO 36 Draw the Lewis structure for formaldehyde HZCO 37 Draw all the resonance structures for the nitrate ion N0339 N is the central atom 38 Draw a the resonance structures for dinitrogen oxide N20 N is the central atom

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