CHEM 120 Exam 2 2023: Chapters 5,6,7,8 (With Answer Key) 100% CORRECT (PASS GUARANTEE) - Chamberlain College of Nursing
PART 1: Multiple Choice questions: Q 1-24. (2 point each)
1. Chemical reactions (equations) show the following
a. Reactants
b. Products
c. Physical state of each (gas or ...
CHEM 120 Exam 2 2023: Chapters 5,6,7,8 (With Answer Key) 100%
CORRECT (PASS GUARANTEE) - Chamberlain College of Nursing
PART 1:
Multiple Choice questions: Q 1-24. (2
point each)
1. Chemical reactions (equations) show the following
a. Reactants
b. Products
c. Physical state of each (gas or
liquid or solid) d. All of the
above
2. The following is true for a mole
a. It is also known as Avagadro’s number
b. It contains 6.022 * 1023 molecules
c. It contains mass equivalent to
molecular weight d. All of the
above are true
3. In balancing chemical equations, the
coefficients are used to a. Show
number of moles
b. Show volume of each in liters
c. Show amount of each in grams
d. Show temperature at which the substance is stable
4. 2H2 + O2 2H2O means that
a. 2 grams of H2 g and 1 gram of O2 gas combine
, to form 2 grams of water. b. 2 moles of H2 g and 1
mole of O2 gas combine to form 2 moles of water.
c. 2 grams of H2 g and 1 gram of O2 gas combine to form 2 moles of water.
d. 2 molecules of H2 g and 1 molecule of O2 gas combine to form 2 molecules of water.
5. 2H2 + O2 2H2O. In this equation, correct method to
calculate molecular mass of water is
a. 2[2(mass of hydrogen) + mass of oxygen]
b. 2(mass of hydrogen gas) +
mass of oxygen gas c. 2(mass of
hydrogen) + mass of oxygen
6. One mole of O2 gas contains number of molecules.
a. 32 Grams
b. 1
c. 6.02 * 1023
d. None of the above
7. Concentration of a solution is
a. Amount of solute dissolved in given amount of solvent
b. Amount of solute dissolved in 1 L of solvent
c. 1 g of solute dissolved in given amount of solvent
d. A mass equivalent to Molecular weight of solute dissolved in given amount of solvent
8. The following is a product of reaction of a nonmetal oxide with water to make acid.
a. C6H1
2O6 b.
H2CO3
c. NH4OH
d. CO2
9. If CaO reacts with water, the following product will be made.
a. Ca
b. CaOH
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