NEW
Font size
WorksheetsChemistry
Total questions: 15
Worksheet time: 8mins
A limiting reactant is the reactant that is completely used up in the chemical reaction.
True
False
An excess reactant is the reactant that is ________________ used up in a chemical reaction
not completely
completely
The ___________ is the ratio of the actual yield to the theoretical yield that demonstrates the efficiency of the reaction.
theoretical yield
percent yield
actual yield
product
If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the
theoretical yield
mole ratio
actual yield
percentage yield
Which is the correct mole ratio of K3PO4 to KNO3 represented by the unbalanced equation below:
Mg(NO3)2 + K3PO4 → Mg3(PO4)2 + KNO3
1:1
1:2
2:3
1:3
What is a mixture?
a combination of elements to make a new substance
a combination of substances in which the atoms of the substance do not chemically combine
a combination of substances where new substances are formed through a reaction
a chemically combined substance
What is a substance that is dissolved in another substance?
solution
solute
solvent
compound
This type of mixture contains two or more substances that are visibly distinguishable.
homogeneous
heterogeneous
solution
colloid
Which of the following is a homogeneous mixture?
salt
water
sugar
a sugar-water solution
This type of mixture looks gel like and has moderate sized particles suspended
Suspension
Solute
Colloid
Solvent
What is the molality of a solution containing 1.3 mol in 13.4 kg of solution?
9.7 m
17.42 m
0.097 m
If 1.65 L of water is added to 125 g of NaOH, what is the mole fraction of WATER?
1.03
0.0330
0.967
0.916
What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?
0.488 m
7.66 m
7.67 m
0.00767 m
How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?
1074 mol
0.069 mol
1.07 mol
62.7 mol
What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?
0.018 m
0.0011 m
1.052 m
0.062 m
