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Q 1/30
Score 0
Which substance is present in the smallest proportion in a solution?
30
liquid
solute
solvent
solid
Q 2/30
Score 0
Determine the molarity of a solution made by dissolving 11.7 g of NaNO3 in water where the final volume is 250.0 mL.
300
0.0311 M
0.551 M
0.214 M
0.138 M
30 questions
Q.
Which substance is present in the smallest proportion in a solution?
1
30 sec
Q.
Determine the molarity of a solution made by dissolving 11.7 g of NaNO3 in water where the final volume is 250.0 mL.
2
300 sec
Q.
Determine the volume of a 0.0351 M Li3PO4 solution that contains 0.0164 moles of Li3PO4
3
300 sec
Q.
Determine the molality of a solution formed by dissolving 0.187 moles of NaCl in 456 grams of water. The density of the solution is 1.44 g/mL.
4
300 sec
Q.
What mass of LiOH is required to prepare 0.250 L of a 3.55 M solution?
5
300 sec
Q.
What mass of water is required to dissolve 27.8 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m solution?
6
300 sec
Q.
The distinguishing characteristic of all electrolyte solutions is that they
7
30 sec
Q.
Which process defines how an ionic compounds break apart into its constituent ions upon dissolution?
8
30 sec
Q.
What volume of concentrated (14.7 M) phosphoric acid is needed to prepare 25.0 L of 3.0 M H3PO4?
9
300 sec
Q.
What is the molarity of a solution prepared by diluting 1.85 L of 6.5 M KOH to 11.0 L?
10
300 sec
Q.
From the following list of aqueous solutions and water, select the one with the highest boiling point.
11
60 sec
Q.
Determine the freezing point of a solution formed by dissolving 0.187 moles of glucose in 456 grams of water. (For water, Kf = 1.86°C/m)
12
300 sec
Q.
What is defined as the selective passage of solvent molecules through a porous membrane from a more dilute solution to a more concentrated solution?
13
30 sec
Q.
Based on the solubility rules, which of these processes will occur when solutions of ZnSO4(aq) and MgCl2(aq) are mixed?
14
120 sec
Q.
If aqueous solutions of Pb(NO3)2 and NaCl are mixed, which ions, if any, are spectator ions? Pb(NO3)2(aq) + 2NaCl(aq) → PbCl2(s) + 2NaNO3(aq)
15
120 sec
Q.
If aqueous solutions of Ba(OH)2 and HNO3 are mixed, what products are formed?
16
120 sec
Q.
What is the oxidation number of sulfur in sulfuric acid?
17
120 sec
Q.
Which equation describes a redox reaction?
18
120 sec
Q.
Which is a correct description of the following reaction? H2SO4 + Cd(OH)2 → 2H2O + CdSO4
19
120 sec
Q.
What mass of ammonia is formed when 5.36 g of nitrogen gas reacts with excess hydrogen gas?
20
300 sec
Q.
What mass of sodium carbonate is required for complete reaction with 8.35 g of nitric acid to produce sodium nitrate, carbon dioxide, and water?
21
300 sec
Q.
What mass of oxygen is required to react with calcium to produce 44.8 g calcium oxide?
22
300 sec
Q.
How many grams of water could be made from 5.0 mol H2 and 3.0 mol O2?
23
300 sec
Q.
What mass of excess reactant remains at the end of the reaction if 90.0 g of SO2 are mixed with 100.0 g of O2?
24
300 sec
Q.
If 3.41 g of nitrogen react with 2.79 g of hydrogen to produce ammonia, what is the limiting reactant and what mass of ammonia is produced? 2SO2 + O2 → 2SO3
25
300 sec
Q.
If 119.3 g of PCl5 are formed from the reaction of 61.3 g Cl2 with excess PCl3, what is the percent yield? PCl3(g) + Cl2(g) → PCl5(g)
26
300 sec
Q.
Calculate the volume of H2(g) at 273 K and 2.00 atm that will be formed when 275 mL of 0.725 M HCl solution reacts with 50.0 g Zn(s) to give hydrogen gas and aqueous zinc chloride.
27
300 sec
Q.
Given that CaO(s) + H2O(l) → Ca(OH)2(s), heat of reaction = −64.8 kJ/mol, how many grams of CaO must react in order to liberate 525 kJ of heat?
28
300 sec
Q.
What is the volume of NH3 produced in the following reaction when 3.0 L of N2 reacts with 4.0 L of H2 ? N2(g) + 3H2(g) → 2NH3(g)
29
300 sec
Q.
What volume of 0.307 M K2SO4 solution is required to react exactly with 85.0 mL of 0.100 M AgNO3? K2SO4(aq) + 2AgNO3(aq) → 2KNO3(aq) + Ag2SO4(s)
