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.
Cr
B.
Cl
C.
Cs
D.
Ca
Question #2
The chemical formula for nitrous acid is
A.
H2N2O6
B.
HNO2
C.
HNO3
D.
H3N
Question #3
In the formula Fe2(SO4)3, how many sulfur atoms are there?
A.
2
B.
4
C.
1
D.
3
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.
diboron tetrachloride
C.
carbon tetrachloride
D.
diphosphorus pentafluoride
E.
none of the above
Question #5
How many oxygen atoms are in the formula Al(NO3)3?
A.
12
B.
9
C.
1
D.
6
E.
3
Question #6
Which of the compounds, C3H8, MgCl2, Zn(NO3)2, OCl2, are expected to exist as molecules?
A.
C3H8 and OCl2
B.
only C3H8
C.
C3H8, Zn(NO3)2, and OCl2
D.
MgCl2 and Zn(NO3)2
Question #7
If given the formula N2O8, how would you properly name it?
A.
nitrogen tetroxide
B.
dinitrogen octoxide
C.
nitrogen octoxide
D.
dinitrogen oxide
E.
none of the above
Question #8
What would be the proper name of a compound made from cesium and oxygen?
A.
cesium (I) oxide
B.
cesium oxide
C.
oxygen ceside
D.
cesium dioxide
E.
none of the above
Question #9
If you combined magnesium and oxygen into a compound, how would the formula be written?
A.
Mg2O.
B.
MgO
C.
Mg2O2.
D.
MgO2.
E.
none of the above
Question #10
Which of the following is the proper name for HCO3- ?
A.
hydrogen carbon trioxide
B.
hydrogen carbonate
C.
hydrocarbate
D.
hydrocarbooxide
E.
none of the above
Question #11
The correct name for LiCl is
A.
lithium monochloride
B.
lithium(I) chloride
C.
monolithium monochloride
D.
monolithium chloride
E.
lithium chloride
Question #12
The correct name for Ca2+ is
A.
monocalcium ion
B.
calcium(I) ion
C.
calcium(II) ion
D.
calcium 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.
none of these
C.
810
D.
6
E.
23
Question #14
'If given 0.0543 kg of calcium nitrate to dissolve with water to 0.355 L, what would be the concentration?
A.
1.99 M
B.
0.331 M
C.
0.117 M
D.
0.932 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.
75.0 g NaOH and add water until the final solution has a volume of 3.00 L.
B.
75 g NaOH and add 3.00 L water to it.
C.
30.0 g NaOH and add 3.00 L of water to it.
D.
30.0 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.
10 M Al3+ ions and 0.30 M Br- ions
B.
0.10 M Al3+ ions and 0.033 M Br- ions
C.
0.033 M Al3+ ions and 0.033 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.
188 grams
B.
64.2 grams
C.
642 grams
D.
0.188 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.
0.504 M
B.
0.420 M
C.
3.50 M
D.
0.350 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.
3.75 x 103 mol
C.
56.1 mol
D.
6.67 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.
15.6
D.
0.814
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.
520.0 mL
B.
750.0 mL
C.
83.3 mL
D.
0.048 mL
Question #22
What is a good generic definition of a hypothesis?
A.
A combination of politics and scientific research to answer important questions for the general population
B.
A theory that can easily be proven by conducting a few simple experiments.
C.
A prediction concerning a natural phenomenon based on personal observations in the natural world.
D.
An educated guess or expected answer to a scientific question based on prior knowledge and observation.
Question #23
Which hypothesis states that no statistical significance exists between the independent and dependent variable?
A.
alternative hypothesis
B.
complex hypothesis
C.
statistical hypothesis
D.
null hypothesis
E.
simple hypothesis
Question #24
A hypothesis should suggest a relationship between what two variables the researcher will test
A.
deductive and inductive
B.
independent and deductive
C.
dependent and independent
D.
dependent and inductive
Question #25
A nickel (II) chloride solution is saturated at a concentration of 1 M.
A.
TRUE
B.
FALSE
Question #26
A potassium chromate solution is saturated at a concentration of 1 M.
A.
FALSE
B.
TRUE
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.
2.53 M
B.
0.67 M
C.
1.00 M
D.
5.00 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.
0.67 M
B.
1.00 M
C.
2.53 M
D.
5.00 M
Question #29
A potassium dichromate solution is saturated at a concentration of 1 M.
A.
TRUE
B.
FALSE
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