SCIN 131 - Introduction to Chemistry » Summer 2019 » Week 3 Lesson Quiz
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Question #1
Which element can form more than one kind of monatomic cation?
A.
Ca
B.
Cr
C.
Cl
D.
Cs
Question #2
The chemical formula for nitrous acid is
A.
H3N
B.
HNO3
C.
H2N2O6
D.
HNO2
Question #3
In the formula Fe2(SO4)3, how many sulfur atoms are there?
A.
3
B.
2
C.
4
D.
1
E.
12
Question #4
`If I tell you the formula mass for a compound is 153.82 amu, which of the following could it be?
A.
nitrogen dioxide
B.
carbon tetrachloride
C.
diphosphorus pentafluoride
D.
diboron tetrachloride
E.
none of the above
Question #5
How many oxygen atoms are in the formula Al(NO3)3?
A.
9
B.
3
C.
6
D.
12
E.
1
Question #6
Which of the compounds, C3H8, MgCl2, Zn(NO3)2, OCl2, are expected to exist as molecules?
A.
only C3H8
B.
MgCl2 and Zn(NO3)2
C.
C3H8, Zn(NO3)2, and OCl2
D.
C3H8 and OCl2
Question #7
If given the formula N2O8, how would you properly name it?
A.
dinitrogen oxide
B.
nitrogen octoxide
C.
nitrogen tetroxide
D.
dinitrogen octoxide
E.
none of the above
Question #8
What would be the proper name of a compound made from cesium and oxygen?
A.
oxygen ceside
B.
cesium (I) oxide
C.
cesium dioxide
D.
cesium oxide
E.
none of the above
Question #9
If you combined magnesium and oxygen into a compound, how would the formula be written?
A.
MgO2.
B.
Mg2O2.
C.
Mg2O.
D.
MgO
E.
none of the above
Question #10
Which of the following is the proper name for HCO3- ?
A.
hydrocarbate
B.
hydrogen carbonate
C.
hydrocarbooxide
D.
hydrogen carbon trioxide
E.
none of the above
Question #11
The correct name for LiCl is
A.
monolithium chloride
B.
lithium chloride
C.
monolithium monochloride
D.
lithium monochloride
E.
lithium(I) chloride
Question #12
The correct name for Ca2+ is
A.
calcium ion
B.
calcium(I) ion
C.
monocalcium ion
D.
calcium(II) ion
E.
calcium
Question #13
If you were to count all the atoms in the formula C6H9N3O5S, how many would there be?
A.
24
B.
6
C.
23
D.
810
E.
none of these
Question #14
'If given 0.0543 kg of calcium nitrate to dissolve with water to 0.355 L, what would be the concentration?
A.
0.331 M
B.
0.117 M
C.
0.932 M
D.
1.99 M
Question #15
You are preparing some solutions for your instructor and have been asked to prepare 3.00 L of a 0.250M sodium hydroxide solution. To make the solution, you should weigh out:
A.
75 g NaOH and add 3.00 L water to it.
B.
30.0 g NaOH and add water until the final solution has a volume of 3.00 L.
C.
30.0 g NaOH and add 3.00 L of water to it.
D.
75.0 g NaOH and add water until the final solution has a volume of 3.00 L.
Question #16
'Suppose you have a 0.10 M solution of AlBr3. What is the concentration of each ion?
A.
0.033 M Al3+ ions and 0.033 M Br- ions
B.
0.10 M Al3+ ions and 0.033 M Br- ions
C.
10 M Al3+ ions and 0.30 M Br- ions
D.
0.30 M Al3+ ions and 0.10 M Br- ions
Question #17
What mass of sucrose, C12H22O11 is present in 75.0 mL of a 2.50 M solution?
A.
0.188 grams
B.
642 grams
C.
188 grams
D.
64.2 grams
Question #18
If I start with 0.0350 L of a 12.0 M hydrochloric acid solution, and dilute it with water to a new volume of 1.20 L, what is the new concentration?
A.
0.350 M
B.
0.504 M
C.
3.50 M
D.
0.420 M
Question #19
If you have a giant stockpile of 5.00 M KOH, and you pour out some of it into a 750 mL container, how many moles did you pour out?
A.
3.75 mol
B.
56.1 mol
C.
6.67 mol
D.
3.75 x 103 mol
Question #20
Suppose you have a NaF solution that has a concentration of 45.5 % by mass. If you take 34.2 g of this solution, how many moles does that represent?
A.
75.2
B.
0.371
C.
0.814
D.
15.6
Question #21
You are preparing solutions in the lab and need to make 250.0 mL of a 2.00 M HCl solution. All you have in stock is 6.00 M HCl. How many milliliters of the stock solution do you need?
A.
0.048 mL
B.
520.0 mL
C.
83.3 mL
D.
750.0 mL
Question #22
What is a good generic definition of a hypothesis?
A.
A theory that can easily be proven by conducting a few simple experiments.
B.
A prediction concerning a natural phenomenon based on personal observations in the natural world.
C.
An educated guess or expected answer to a scientific question based on prior knowledge and observation.
D.
A combination of politics and scientific research to answer important questions for the general population
Question #23
Which hypothesis states that no statistical significance exists between the independent and dependent variable?
A.
simple hypothesis
B.
alternative hypothesis
C.
statistical hypothesis
D.
null hypothesis
E.
complex hypothesis
Question #24
A hypothesis should suggest a relationship between what two variables the researcher will test
A.
dependent and inductive
B.
deductive and inductive
C.
dependent and independent
D.
independent and deductive
Question #25
A nickel (II) chloride solution is saturated at a concentration of 1 M.
A.
FALSE
B.
TRUE
Question #26
A potassium chromate solution is saturated at a concentration of 1 M.
A.
TRUE
B.
FALSE
Question #27
What is the molarity of the drink mix if you have 0.53 mol of compound and 0.79 L of solution?
A.
1.00 M
B.
2.53 M
C.
5.00 M
D.
0.67 M
Question #28
What is the molarity of the drink mix if you have 1.00 mol of compound and 0.20 L of solution
A.
2.53 M
B.
5.00 M
C.
0.67 M
D.
1.00 M
Question #29
A potassium dichromate solution is saturated at a concentration of 1 M.
A.
TRUE
B.
FALSE
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