Quiz 2.pdf - Quiz Quiz 2 Quiz 2 Started Sep 19 at 12:29pm...

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Unformatted text preview: 9/19/2016 Quiz: Quiz 2 Quiz 2 Started: Sep 19 at 12:29pm Quiz Instructions The RULES: You can collaborate with classmates and use your notes while doing the problems so this is more like homework. You may only consult with other current Chem. 1A classmates, not with lab/seminar instructors/facilitators. I encourage you to work it out alone or in a cooperative group. Do not just copy the answers from someone else or you will not be able to do the problems in the first test. Once you’ve done the quiz, please do not just give the answers to someone else. Help them work out the problems. Teach them how to do the problems. You will reinforce your knowledge if you explain it to another person. Hard copy of the quiz can be found at the yahoo group. Question 1 0.5 pts 9.73 g of lead(IV) chloride contains enough Cl- ions to make ____ g of magnesium chloride. a) 5.31 g b) 0.188 g c) 17.8 g d) 1.32 g e) 0.0557 g c b a d e Question 2 0.5 pts What are the spectator ions when Co(OH)3 reacts with H2SO4? a) none b) H+ and OH- c) Co+3 and SO4-2 d) SO4-2 e) Co+3 c b d a 1/5 9/19/2016 Quiz: Quiz 2 e Question 3 0.5 pts When the molecular reaction between sodium silicate and copper(II) nitrite is balanced correctly the stoichiometric coefficient for sodium nitrite is _____. a) 1 b) 2 c) 4 d) 8 e) 3 c d a b e Question 4 0.5 pts How many FREE ions are there on the product side of the total ionic equation that results from the reaction between bismuth(III) hypochlorite and acetic acid. a) 0 b) 10 c) 6 d) 4 e) 8 e d a c b Question 5 0.5 pts What is the net ionic equation for the reaction between tin(IV) sulfide and nitric acid? a) SnS2 + 4 H+ ---> 2 H2S + Sn+4 -2 + 2/5 9/19/2016 Quiz: Quiz 2 b) S-2 +2 H+ ---> H2S c) SnS2 + 4 HNO3 ----> 2 H2S + Sn(NO3)4 d) Sn+4 + 4 NO3- ----> Sn(NO3)4 e) SnS2 + 4 NO3- ----> 2 S-2 + Sn(NO3)4 e a d b c Question 6 0.5 pts Which of the combinations below will produce an insoluble salt? a) Ba(OH)2 + HCl b) MnSO4 + Pb(NO2)2 c) H2SO4 + AlBr3 d) SrS + HClO e) MgCl2 + Au(ClO4)3 a e d c b Question 7 0.5 pts I2 + Ti+4 ----> Ti + IO3- When the full reaction above is balanced, what is the stoichiometric coefficient for Ti? a) 4 b) 10 c) 5 d) 3 e) 1 d c 3/5 9/19/2016 Quiz: Quiz 2 a b e Question 8 0.5 pts For the reaction in question 7, which species is the reducing agent a) Ti b) Ti+4 c) I2 d) IO3- e) H2O c a d b e Question 9 0.5 pts The combustion of 28.8 g of NH3 consumes exactly _____ g of O2. 4 NH3 + 7 O2 ----> 4 NO2 + 6 H2O a) 94.9 b) 54.12 c) 108 d) 15.3 e) 28.8 e c a d c Question 10 0.5 pts 4/5 9/19/2016 Quiz: Quiz 2 3.50 g of Li are combined with 3.50 g of N2. What is the maximum mass of Li3N that can be produced? 6 Li + N2 ---> 2 Li3N a) 3.52 g b) 2.93 g c) 17.6 g d) 5.85 g e) 8.70 g b c e a d Quiz saved at 1:08pm Submit Quiz 5/5 ...
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