Changing Mass To Moles And Moles To Mass

Approved & Edited by ProProfs Editorial Team

The editorial team at ProProfs Quizzes consists of a select group of subject experts, trivia writers, and quiz masters who have authored over 10,000 quizzes taken by more than 100 million users. This team includes our in-house seasoned quiz moderators and subject matter experts. Our editorial experts, spread across the world, are rigorously trained using our comprehensive guidelines to ensure that you receive the highest quality quizzes.

Learn about Our Editorial Process

| By Kwchiro

Kwchiro

Community Contributor

Quizzes Created: 40 | Total Attempts: 389,188

Questions: 10 | Attempts: 998 | Updated: Mar 21, 2023

Questions

Settings

Feedback

During the Quiz End of Quiz

Difficulty

Sequential Easy First Hard First

Play as

Quiz Flashcard

Create your own Quiz

Share on Facebook Share on Twitter Share on Whatsapp Share on Pinterest Share on Email Copy to Clipboard Embed on your website

How many grams of Calcium are present in 2.3 moles of calcium?

Questions and Answers

1.

How many grams of Calcium are present in 2.3 moles?
- A.
  
  92.18 g
- B.
  
  24.02 g
- C.
  
  40.08 g
- D.
  
  80.16 g
Correct Answer
A. 92.18 g

Explanation
Grams will be a larger number than moles.
So, to calculate moles and MULTIPLY it by molar mass.
(Hint: Think multiplication to get a larger number).
1St: Find the molar mass of Calcium (look on the periodic table): 40.08 g
2nd: Multiply the number of moles by the molar mass: 40.08 x 2.3

Rate this question:
2.

How many grams of NaCl is present in 6.3 moles?
- A.
  
  58.44 g
- B.
  
  368.17 g
- C.
  
  231.2 g
- D.
  
  9.27 g
Correct Answer
B. 368.17 g

Explanation
Grams will be a larger number than moles.
So, to calculate moles and MULTIPLY it by molar mass.
(Hint: Think multiplication to get a larger number).
1St: Find the molar mass of NaCl: Na 22.99 + 35.45 = 58.44 g
2nd: Multiply the number of moles by the molar mass: 6.3 x 58.44 g/mol = 368.17

Rate this question:
3.

How many grams are in 2.3 moles of Na₂SO₄? (The molar mass of Na₂SO₄ is 142.05g/mol)
- A.
  
  61.76 g
- B.
  
  326.72 g
- C.
  
  163.36 g
- D.
  
  81.68 g
Correct Answer
B. 326.72 g

Explanation
Grams will be a larger number than moles.
So, to calculate moles and MULTIPLY it by molar mass.
Multiply the number of moles by the molar mass: 2.3 x 142.05 g/mol = 326.72 g

Rate this question:
4.

How many grams of NH₃ are in 9.2 moles? (The molar mass of NH₃= 17.03 g/mol)
- A.
  
  1.85 g
- B.
  
  19.25 g
- C.
  
  156.68 g
- D.
  
  123.83 g
Correct Answer
C. 156.68 g

Explanation
Grams will be a larger number than moles.
So, to calculate moles and MULTIPLY it by molar mass.
Multiply the number of moles by the molar mass: 9.2 x 17.03 = 156.68 g

Rate this question:

0
1
5.

How many grams of LiCl are in 6.7 moles? (The molar mass of LiCl = 42.39 g/mol)
- A.
  
  42.39 g
- B.
  
  6.33 g
- C.
  
  239.01 g
- D.
  
  284.01 g
Correct Answer
D. 284.01 g

Explanation
Grams will be a larger number than moles.
So, to calculate moles and MULTIPLY it by molar mass.
Multiply the number of moles by the molar mass: 6.7 x 42.39 g/mol = 284.01 g

Rate this question:
6.

How many moles of LiBr are there in 486.30 g of LiBr? (The molar mass of LiBr = 86.84 g/mol)
- A.
  
  5.6 moles
- B.
  
  42,230.292 moles
- C.
  
  193.2 moles
- D.
  
  3.0 moles
Correct Answer
A. 5.6 moles

Explanation
Moles will always be a SMALLER number than grams.
So, to calculate: Take the grams DIVIDE by molar mass.
(Hint: Think division generally gives us a smaller number, multiplication generally gives us a larger number).
485.30 grams divided by the molar mass (86.84) = 5.6 moles

Rate this question:

1
1
7.

How many moles are there in 814.504 g of H₂O?
- A.
  
  14,677.36 moles
- B.
  
  20.2 moles
- C.
  
  45.2 moles
- D.
  
  3,214.52 moles
Correct Answer
C. 45.2 moles

Explanation
Moles will always be a SMALLER number than grams.
So, to calculate: Take the grams DIVIDE by molar mass.
(Hint: Think division generally gives us a smaller number, multiplication generally gives us a larger number).
Molar mass of water: Hydrogen 2(1.01) + Oxygen 1 (16.00) = 18.02 g/mol
Divide grams 814.504 g by molar mass (18.02) = 45.2 moles

Rate this question:
8.

How many moles of CO₂ are there in 171.639 g of CO₂?
- A.
  
  44.01 moles
- B.
  
  3.9 moles
- C.
  
  7,5553.83 moles
- D.
  
  130.22 moles
Correct Answer
B. 3.9 moles

Explanation
Moles will always be a SMALLER number than grams.
So, to calculate: Take the grams DIVIDE by molar mass.
(Hint: Think division generally gives us a smaller number, multiplication generally gives us a larger number).
Molar mass of CO2 = Carbon (12.01) + Oxygen 2(16.00) = 44.01 g/mol
Divide grams 171.639 by molar mass (44.01) = 3.9 moles

Rate this question:
9.

How many moles of K₂O are in 367.38 g of K₂O?
- A.
  
  34,607.2 moles
- B.
  
  367.38 moles
- C.
  
  3.9 moles
- D.
  
  5.9 moles
Correct Answer
C. 3.9 moles

Explanation
Moles will always be a SMALLER number than grams.
So, to calculate: Take the grams DIVIDE by molar mass.
(Hint: Think division generally gives us a smaller number, multiplication generally gives us a larger number).
Molar mass of K2O = Potassium 2 (39.1) + Oxygen (16.00) = 94.2 g/mol
Divide grams 367.38 by molar mass (94.2 g/mol) = 3.9 moles

Rate this question:
10.

How many moles of AlCl₃ are there in 1,119.972 g?
- A.
  
  8.4 moles
- B.
  
  16.8 moles
- C.
  
  32,739.04 moles
- D.
  
  6.2 moles
Correct Answer
A. 8.4 moles

Explanation
Moles will always be a SMALLER number than grams.
So, to calculate: Take the grams DIVIDE by molar mass.
(Hint: Think division generally gives us a smaller number, multiplication generally gives us a larger number).
Molar mass of AlCl3= Aluminum (26.98) + Chlorine 3(35.45) = 133.33 g/mol
Divide the grams 1,119.972 by the molar mass 133.33g/mol = 8.4 moles

Rate this question:

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Jul 30, 2010

Quiz Created by
Kwchiro

Changing Mass To Moles And Moles To Mass

How many grams of Calcium are present in 2.3 moles?

How many grams of NaCl is present in 6.3 moles?

How many grams are in 2.3 moles of Na2SO4? (The molar mass of Na2SO4 is 142.05g/mol)

How many grams of NH­3 are in 9.2 moles? (The molar mass of NH3= 17.03 g/mol)

How many grams of LiCl are in 6.7 moles? (The molar mass of LiCl = 42.39 g/mol)

How many moles of LiBr are there in 486.30 g of LiBr? (The molar mass of LiBr = 86.84 g/mol)

How many moles are there in 814.504 g of H2O?

How many moles of CO2 are there in 171.639 g of CO­2?

How many moles of K­2O are in 367.38 g of K2O?

How many moles of AlCl3 are there in 1,119.972 g?

How many grams are in 2.3 moles of Na₂SO₄? (The molar mass of Na₂SO₄ is 142.05g/mol)

How many grams of NH₃ are in 9.2 moles? (The molar mass of NH₃= 17.03 g/mol)

How many moles are there in 814.504 g of H₂O?

How many moles of CO₂ are there in 171.639 g of CO₂?

How many moles of K₂O are in 367.38 g of K₂O?

How many moles of AlCl₃ are there in 1,119.972 g?