Homework Help is Here – Start Your Trial Now!
Science
Chemistry
PRACTICE 7.5 What is the mass of 0.150 mol of Na SO4? PRACTICE 7.6 How many moles and molecules are there in 500.0 g of HC2H3O2?

PRACTICE 7.5 What is the mass of 0.150 mol of Na SO4? PRACTICE 7.6 How many moles and molecules are there in 500.0 g of HC2H3O2?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
See similar textbooks
icon
Related questions
Question
### Practice Questions for Chemistry Students #### Practice 7.5 **Question:** What is the mass of 0.150 mol of \( \text{Na}_2\text{SO}_4 \)? --- #### Practice 7.6 **Question:** How many moles and molecules are there in 500.0 g of \( \text{HC}_2\text{H}_3\text{O}_2 \)? --- ### Explanation and Steps: **For Practice 7.5:** 1. **Determine Molar Mass of \( \text{Na}_2\text{SO}_4 \):** - Sodium (Na): \( 22.99 \, \text{g/mol} \) - Sulfur (S): \( 32.07 \, \text{g/mol} \) - Oxygen (O): \( 16.00 \, \text{g/mol} \) Therefore, the molar mass of \( \text{Na}_2\text{SO}_4 \) is calculated as: \[ (2 \times 22.99) + 32.07 + (4 \times 16.00) = 45.98 + 32.07 + 64.00 = 142.05 \, \text{g/mol} \] 2. **Calculate the Mass:** \[ \text{Mass} = \text{Moles} \times \text{Molar Mass} = 0.150 \, \text{mol} \times 142.05 \, \text{g/mol} = 21.31 \, \text{g} \] **For Practice 7.6:** 1. **Determine Molar Mass of \( \text{HC}_2\text{H}_3\text{O}_2 \):** - Hydrogen (H): \( 1.01 \, \text{g/mol} \) - Carbon (C): \( 12.01 \, \text{g/mol} \) - Oxygen (O): \( 16.00 \, \text{g/mol} \) Therefore, the molar mass of \( \text{HC}_2\text{H}_3\text{O}_2 \) is calculated as: \[ 1.01 + (2 \
Transcribed Image Text:### Practice Questions for Chemistry Students #### Practice 7.5 **Question:** What is the mass of 0.150 mol of \( \text{Na}_2\text{SO}_4 \)? --- #### Practice 7.6 **Question:** How many moles and molecules are there in 500.0 g of \( \text{HC}_2\text{H}_3\text{O}_2 \)? --- ### Explanation and Steps: **For Practice 7.5:** 1. **Determine Molar Mass of \( \text{Na}_2\text{SO}_4 \):** - Sodium (Na): \( 22.99 \, \text{g/mol} \) - Sulfur (S): \( 32.07 \, \text{g/mol} \) - Oxygen (O): \( 16.00 \, \text{g/mol} \) Therefore, the molar mass of \( \text{Na}_2\text{SO}_4 \) is calculated as: \[ (2 \times 22.99) + 32.07 + (4 \times 16.00) = 45.98 + 32.07 + 64.00 = 142.05 \, \text{g/mol} \] 2. **Calculate the Mass:** \[ \text{Mass} = \text{Moles} \times \text{Molar Mass} = 0.150 \, \text{mol} \times 142.05 \, \text{g/mol} = 21.31 \, \text{g} \] **For Practice 7.6:** 1. **Determine Molar Mass of \( \text{HC}_2\text{H}_3\text{O}_2 \):** - Hydrogen (H): \( 1.01 \, \text{g/mol} \) - Carbon (C): \( 12.01 \, \text{g/mol} \) - Oxygen (O): \( 16.00 \, \text{g/mol} \) Therefore, the molar mass of \( \text{HC}_2\text{H}_3\text{O}_2 \) is calculated as: \[ 1.01 + (2 \
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Mole Concept
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS