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CHEM 1411 CHAPTER 3 EXAM QUESTIONS WITH 100% CORRECT ANSWERS L LATEST VERSION 2025/2026.

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CHEM 1411 CHAPTER 3 EXAM QUESTIONS WITH 100% CORRECT ANSWERS L LATEST VERSION 2025/2026.

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CHEM 1411 CHAPTER 3 EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS L LATEST VERSION 2025/2026.




The molarity of a solution is defined as?


a. the number of moles of solute per kilogram of solvent.
b. the number of equivalent weights of solute per liter of solution.
c. the number of moles of solute per liter of solvent.
d. the number of moles of solute per kilogram of solution.

e. the number of moles of solute per liter of solution. - ANS e. The number of moles of
solute per liter of solution.


Calculate the formula weight of NaHSO 4.
a. 185 amu
b. 193 amu
c. 104 amu
d. 215 amu

e. 120 amu - ANS e. 120 amu


Calculate the number of moles of oxygen atoms in 35.2 grams of oxygen.
a. 4.42 moles
b. 2.20 moles

1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.

, c. 0.54 moles
d. 2.57 moles

e. 1.13 moles - ANS b. 2.20 moles


How many grams are contained in 0.644 mol oxygen?
a. 0.0201 g
b. 20.6 g
c. 10.3 g
d. 0.0403 g

e. 0.644 g - ANS c. 10.3 g


How many moles of calcium are there in a sample of calcium that contains 1.48 x 1024
atoms?
a. 16.3 mol
b. 3.57 mol
c. 2.46 mol
d. 98.5 mol

e. 0.407 mol - ANS c. 2.46 mol


How many moles of POCl 3 are there in 10.0 grams of POCl 3?
a. 4.09 × 10−2 mol
b. 1.17 × 10−3 mol
c. 1.21 × 10−1 mol
d. 3.68 × 10−1 mol

e. 6.51 × 10−2 mol - ANS e. 6.51 x 10-2 mol


How many grams of CaCl 2 equal 4.26 moles of CaCl 2?
a. 302 g


2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.

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