Question 2 1pts 2,750 mL of a solution contains CsCl2in enough butanol. If the molar concentration of CsCl2is 0.375 M, the number of moles of CsCl2in...
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Question 21 pts

2,750 mL of a solution contains CsCl2 in enough butanol. If the molar concentration of CsCl2 is 0.375 M, the number of moles of CsCl2 in the solution is _____.

Group of answer choices



2.75 moles


5.72 moles


0.573 moles


1.03 moles


0.375 moles

 

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Question 3

1 pts

The _____ point is reached when a stoichiometric amount of the titrant has been added to the unknown solution for the reaction to go to completion.

Group of answer choices



equivalence


dissociation


concentration


inflection


end

 

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Question 4

1 pts

Given: CH3CH2COOH + H2O → CH3CH2COO- + H3O+

What volume of 0.500 M CH3CH2COOH is reacting with water to form 2.86 g of CH3CH2COO-?

Group of answer choices



0.0784 L


0.487 L


0.0118 L


0.784 L


0.0487 L

 

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Question 5

1 pts

_____ is the crystalline solid formed when an aqueous solution of barium chloride is reacted with an aqueous solution of sodium sulfate.

Group of answer choices



BaCl2


BaSO4


Na(OH)2


NaSO4


NaCl

 

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Question 6

1 pts

Given--complete ionic equation: 3Ag+(aq) + 3F-(aq) + 3Na+(aq) + PO43-(aq) → Ag3PO4(s) + 3Na+(aq) + 3F-(aq)

In the above complete ionic equation, the spectator ions are:

Group of answer choices



3Na+(aq) and 3Ag+(aq).


3Ag+(aq) and 3F-(aq).


(PO4)3-(aq) and 3F-(aq).


3Ag+(aq) and (PO4)3-(aq).


3F-(aq) and 3Na+(aq).

 

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Question 7

1 pts

Given: HCOOH + KOH→ HCOO-K+ + H2O

What mass of HCOO-K+ is formed when 383 mL of 0.250 M HCOOH is mixed with 885 mL of 0.524 M KOH?

Group of answer choices



48.5 g


8.05 g


885 g


32.0 g


1.06 g

 

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Question 8

1 pts

The mass of sodium hydroxide (NaOH) in 1.50 L of 0.200 M NaOH is _____ g.

Group of answer choices



0.200


40.0


4.00


21.0


12.0

 

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Question 9

1 pts

What is the concentration of OH - in 0.0345 M Ba(OH)2?

Group of answer choices



0.0690 M


0.0960 M


0.0345 M


0.0251 M


0.0543 M

 

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Question 10

1 pts

Which of the following is the net ionic equation for the reaction between the aqueous solutions of magnesium sulfate and sodium carbonate?

Group of answer choices



MgSO4(aq) + Na2CO3(aq) → MgCO3(s) + Na2SO4(s)


Na+(aq) + SO42-(aq)  → Na2SO4(s)


Mg2+(aq) + CO32-(aq)→ MgCO3(s)


MgSO4(aq) + Na2CO3(aq) → MgCO3(s) + Na+(aq) + SO42-(aq)


Mg2+(aq) + SO42-(aq) + Na+(aq) + CO32-(aq) → MgCO3(s) + Na+(aq) + SO42-(aq)

 

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Question 11

1 pts

Which of the following is a strong acid?

Group of answer choices



HClO


HCN


HClO4


HNO2


HF

 

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Question 12

1 pts

Which of the following elements has the greatest tendency to lose electrons?

Group of answer choices



Copper


Magnesium


Manganese


Cadmium


Potassium

 

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Question 13

1 pts

Which of the following is an example of a compound that is very soluble in water but that is essentially nonconductive?

Group of answer choices



Sulfuric acid


Sucrose


Barium hydroxide


Sodium bromide


Calcium chloride

 

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Question 14

1 pts

Given--complete ionic equation: 2Ag+(aq) + 2NO3-(aq) + 2K+(aq) + Cr2O72-(aq) → Ag2Cr2O7(s) + 2K+(aq) + 2NO3-(aq)

Convert the given equation into an overall chemical equation.

Group of answer choices



2Ag+(aq) + Cr2O72-(aq) → Ag2Cr2O7(s)


2AgNO3 (aq) + K2Cr2O7 (aq)→ Ag2Cr2O7(s) + 2KNO3(aq)


Ag2Cr2O7(s) + K2Cr2O7 (aq) →2AgNO3 (aq) + 2KNO3(aq)


2Ag+(aq) + 2NO3-(aq) + 2K+(aq) + Cr2O72-(aq) → 2K+(aq) + 2NO3-(aq)


2AgNO3 (aq) + 2KNO3(aq) → Ag2Cr2O7(s) + K2Cr2O7(aq)

 

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Question 15

1 pts

What volume of a 2.00 M sucrose stock solution is necessary to prepare 2,750 mL of a sucrose solution with molarity 5.34 M?

Group of answer choices



3.01 L


7.34 L


2.10 L


0.750 L


2.00 L

 

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Question 16

1 pts

Given: 2C6H5COOH + Na2CO3→2C6H5COONa + H2O + CO2

If 775 mL of 0.507 M C6H5COOH solution is used in the reaction above, the mass of carbon dioxide formed is _____ g.

Group of answer choices



8.64


5.44


3.55


6.88


5.33

 

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Question 17

1 pts

What is the concentration of Ca2+ in 0.0152 M Ca3(NO3)2?

Group of answer choices



0.0304 M


0.0152 M


0.304 M


0.0456 M


0.456 M

 

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Question 18

1 pts

Which of the following is an example of a neutralization reaction?

Group of answer choices



MgCl2+2NaNO3→ Mg(NO3)2+2NaCl


BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2Na+(aq) + 2Cl-(aq)


2C6H6COOH + Na2CO3(aq) → 2C6H6COO-Na+(aq) + H2O + CO2(g)


2Na+ + S2-→ Na2S(s)


HI(aq) + KOH(aq) →KI(s) + H2O(l)

 

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Question 19

1 pts

Which of the following is a strong electrolyte?

Group of answer choices



Ferrous sulfate


2-propanol


Acetone


Formaldehyde


Ethanol

 

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Question 20

1 pts

According to the Arrhenius definition of acids and bases, an acid is a substance:

Group of answer choices



that dissolves in water to produce H+ ions.


produced by the reaction of two bases.


that dissolves in water to produce OH- ions.


that has a greater OH- ion concentration than H+ ion.


that accept a proton.

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