Name: 
 

Practice Test 1A



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

The area of a 15-inch pizza is 176.7 in2.  What is this area in cm2? (1 in = 2.54 cm)
A)
448.8 cm2
B)
1140. cm2
C)
897.6 cm2
D)
69.57 cm2
 

 2. 

Calculate the number of oxygen atoms in 29.34 g of sodium sulfate, Na2SO4.
A)
1.244 x 1023
B)
1.166 x 1025
C)
4.975 x 1023
D)
2.915 x 1024
 

 3. 

What is the mass in grams of 0.250 mol of calcium carbonate?
A)
4.00 x 10-2 g
B)
25.0 g
C)
4.00 x 102 g
D)
2.50 x 10-3 g
 

 4. 

Which of the following is the correct name for FeI3?
A)
Ferrous iodide
B)
Ferric iodide
C)
Iron triiodide
D)
Iron (II) iodide
 

 5. 

The speed needed to escape the pull of Earth’s gravity is 11.3 km/s.  What is this speed in mi/hr? (1 mi = 1.609 km)
A)
18200 mi/hr
B)
25300 mi/hr
C)
65500 mi/hr
D)
1090 mi/hr
 

 6. 

Calculate the number of moles in 17.8 g of magnesium hydroxide.
A)
0.431 mol
B)
3.28 mol
C)
0.305 mol
D)
2.32 mol
 

 7. 

How many protons, neutrons and electrons are present in the antimony (III) ion, mc007-1.jpg?
A)
48, 72, 51
B)
51, 72, 51
C)
123, 72, 123
D)
51, 72, 48
 

 8. 

An ion that has 18 electrons and a charge of 2+
A)
has 16 protons.
B)
has the same number of electrons as an Argon atom.
C)
has 16 electrons.
D)
is an anion.
 

 9. 

The correct name for the compound (NH4)2S is
A)
ammonium sulfite
B)
diammonium sulfide
C)
ammonium sulfide
D)
ammonium (I) sulfite
 

 10. 

Select the answer that expresses the result of the calculation below with the correct number of significant figures:
mc010-1.jpg
A)
13.4
B)
13
C)
13.357
D)
13.35678
 

 11. 

Select the answer with the correct number of significant figures for the sum below:

13.914 cm + 243.1 cm + 12.0046 cm
A)
269.0 cm
B)
269.019 cm
C)
269.02 cm
D)
269.0186 cm
 

 12. 

Determine the molar mass of iron (III) bromide hexahydrate.
A)
313.57 g/mol
B)
403.67 g/mol
C)
355.54 g/mol
D)
317.61 g/mol
 

 13. 

Acetone boils at 56.1 °C.  What is this temperature in degrees Fahrenheit?
A)
43.4 °F
B)
69.0 °F
C)
133 °F
D)
159 °F
 

 14. 

Which of the following is an example of the law of multiple proportions?
A)
A sample of chlorine is found to contain three times as much Cl-35 as Cl-37.
B)
Two different compounds formed from carbon and oxygen have the following mass ratios:  1.33 g O:  1 g C and 2.66 g O:  1 g C.
C)
Two different samples of table salt are found to have the same ratio of sodium to chlorine.
D)
Nitrogen dioxide always has a mass ratio of 2.28 g O:  1 g N.
 

 15. 

In which of the following sets do all species have the same number of electrons?
A)
) F-, Ne, Mg2+
B)
Ge, Se2-, Br-
C)
K+, Rb+, Cs+
D)
Br, Br-, Br+
 

 16. 

Determine the empirical formula for a compound that contains C, H and O.  It contains 52.14% C and 34.73% O by mass.
A)
C2H6O
B)
CHO
C)
CH4O3
D)
CH3O
 

Problem
 

 17. 

Balance the following equation:

pr017-1.jpg
 

 18. 

Classify each compound shown below as hydrocarbon or functionalized hydrocarbon, and write molecular formula for each:

a)
  pr018-1.jpg

b)
pr018-2.jpg

c)
  pr018-3.jpg



d)
pr018-4.jpg
 



 
Check Your Work     Start Over