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Senior 2024 Spring Final Exam Master

Last updated 11 months ago

8 questions

Calculating Molar Mass

Required

2

Required

2

Grams to Moles Conversions

Required

5

Required

5

Moles to Moles Stoichiometry

Required

5

Required

5

Required

5

Mass to Mass Stoichiometry

Required

5

Quality Control Titration Scenario

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Calculate the molar mass for calcium carbonate:  CaCO3

88.08 g/mol

60.01 g/mol

40.08 g/mol

100.09 g/mol

Calculate the molar mass for octanoic acid: C8H16O2

112.24 g/mol

72.12 g/mol

128.08 g/mol

144.24 g/mol

Calculate the number of moles of sodium hydroxide that is present in 16.45 g of NaOH [use 41.00 g/mol as the molar mass for NaOH]

0.40 mol NaOH

2.49 mol NaOH

4.98 mol NaOH

674.45 mol NaOH

Calculate the number of moles of carbon dioxide that is present in 8.23 g of CO2 [use 44.01 g/mol as the molar mass for CO2]

0.535 mol CO2

5.35 mol CO2

0.0187 mol CO2

0.187 mol CO2

Given the balanced equation:  C3H8    +    5 O2    ------>      3 CO2     +     4 H2O   
How many moles of C3H8 are needed to produce 25 moles CO2 ?

41.6 mol C3H8

75.0 mol C3H8

18.75 mol C3H8

8.33 mol C3H8 

Given the balanced equation:   2 SO2   +    O2  + 2 H2O   ------>      2 H2SO4
 How many moles of H2SO4 are produced from 12.5 moles of SO2 ?

12.5 mol H2SO4

Not enough information to calculate

.125 mol H2SO4

6.25 mol H2SO4

Given the balanced equation:   2 SO2   +    O2  + 2 H2O   ------>      2 H2SO4
 Which is the correct mole ratio to calculate how many moles of O2 are needed to produce 12.5 moles H2SO4 ?

Not enough information to calculate

Hydrogen reacts with excess nitrogen as follows:  N2 (g)   +   3H2 (g)   ----->   2 NH3 (g)
If 27.0 g of H2 reacts, what mass of NH3 is formed?

342 g NH3

15.2 g NH3

34.2 g NH3

152 g NH3