WorksheetsUntitled Quiz
Total questions: 10
Worksheet time: 5mins
What scientific principle or law is used in the process of balancing chemical equations?
Law of Definite Proportions
Law of Conservation of Mass
Law of Multiple Proportions
Law of Conservation of Energy
Which of the following is NOT a type of chemical reaction described in the text?
Combustion reactions
Combination reactions
Substitution reactions
Decomposition reactions
What is Avogadro’s number, and how is it related to the mole?
6.02 x 10^23, it is the number of atoms in one mole of a substance
3.14, it is the value of pi in chemistry
9.81, it is the acceleration due to gravity in chemistry
2.718, it is the base of natural logarithms in chemistry
Which of the following is a common method for determining empirical formulas in the laboratory?
Titration
Combustion analysis
Chromatography
Distillation
What is the relationship between the formula weight of a substance and its molar mass?
They are inversely proportional
They are always equal
They are directly proportional
There is no relationship
What is the molar mass of glucose, C6H12O6?
90.0 g/mol
150.0 g/mol
180.0 g/mol
210.0 g/mol
Which substance is the limiting reactant when 3.0 mol of N2 and 6.0 mol of H2 are allowed to react to form ammonia?
NH3
H2
N2
Not enough information provided
What is the theoretical yield of adipic acid if 25.0 g of cyclohexane reacts with excess oxygen?
125.0 g
100.0 g
75.0 g
50.0 g
What is the percent yield for the reaction if 33.5 g of adipic acid is obtained from the reaction in question 8?
25%
50%
75%
100%
What is the empirical formula of ascorbic acid (vitamin C) based on the given mass percentages of C, H, and O?
C3H4O4
C3H4O3
C3H4O3
C2H4O2
