Ch 8 Test

Question 1

T/F

Given the reaction 2Na+Cl2->2NaCl the conversionfactor for chlorine gas to sodium chloride is 1 mol Cl2:2 mol NaCl

Answer 1

T

Question 2

T/F

Given the reaction 2Ca+O2->2CaO, if 2 mol of CaO are formed in this reaction, then 2 mol of O2, must have reacted

Answer 2

F

Question 3

T/F

Before determining conversion factors, it is necessary to make sure the equation is properly balanced

Answer 3

T

Question 4

T/F

The conversion between moles and mass for a compound is molar mass

Answer 4

T

Question 5

T/F

The conversion factor for moles of carbon dioxide to mass of carbon dioxide is 1 mole=44 grams

Answer 5

T

Question 6

Which of the following is true about stoichiometry
A.) shows the numerical relationship between chemical quantities in a balanced reaction
B.) allows predictions o how much of the reactants are necessary to form a given amount of product
C.) allows predictions of the amount of products that form in a chemical reaction based on the amounts of reactant
D.) all are true
E.) none are true

Answer 6

D

Question 7

In the reaction: n2+3h2->2nh3. If 6 moles of H2 totally reacted with N2, how many moles of ammonia would be expected to form

Answer 7

4 moles

Question 8

Given the reaction: 2H2+O2->2H2O, how many moles of water are made form a complete reaction of 2.2 moles of oxygen gas with hydrogen gas

Answer 8

4.4 moles

Question 9

Given the reaction: 2Na+Cl2-> 2NaCl, how many mole of cholorine gas are needed to make 0.6 moles of sodium chloride

Answer 9

0.3 moles

Question 10

Given the equation S+6(HNO3)->H2(SO4)+6(NO2)+2H2O, how many grams of NO2 are theoretically produced if we start with 1.20 ml if S

Answer 10

331

Question 11

Given the equation 3Ca(NO3)2+2Li(PO4)->6Li(NO3)+4H(NO3)

Ho many grams of H(NO3) wll be produced if you start with 1.50 g of NO2

Answer 11

2.05 G

Question 12

2Na+Cl2->2NaCl

How many moles of NaCl result from teh complete reaction of 3.4 moles of Cl2

Answer 12

6.8 mol

Question 13

6CO+6H2O->6O2+C6H12O6

How many grams of glucose are produced when you start with 58.5 grams of co2

Answer 13

39.9 grams

Question 14

How many moles are in 0.500 mole of n2o5

Answer 14

3.01x10^23

Question 15

How many moles of argon are in 3.01x10^22 atoms of argon \

Answer 15

5.00x10^-2

Question 16

Find the mass in grams of 1.00x10^23 molecules of N2

Answer 16

4.65g

Question 17

How many liters are in 0.123 moles of Ag(NO3)

Answer 17

2.75 L

Question 18

How many liters of Ag(NO3) can you make from 22 grams of the same compound

Answer 18

2.9 L

Question 19

How many molecules are in 35 liters of ag(no3)

Answer 19

9.4x10^23 molecules

Question 20

What is the molar mass of Cu(SO4)

Answer 20

160

Question 21

What is the %mass of carbon in C6H14

Answer 21

83.7%