Homework Help is Here – Start Your Trial Now!
Science
Chemistry
Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. collected gas Suppose the H, gas evolved by a certain chemical reaction taking place at 35.0 °C is collected over water, using an chemical reaction water apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 110. mL. Sketch of a gas-collection apparatus Calculate the mass of H, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases.

Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. collected gas Suppose the H, gas evolved by a certain chemical reaction taking place at 35.0 °C is collected over water, using an chemical reaction water apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 110. mL. Sketch of a gas-collection apparatus Calculate the mass of H, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases.

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

Please doble check your answer,  I already got a similar problem wrong.  You can use attached photo for reference. Make sure to use two significant figures

Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. collected gas Suppose the H, gas evolved by a certain chemical reaction taking place at 35.0 °C is collected over water, using an chemical reaction water apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 110. mL. Sketch of a gas-collection apparatus Calculate the mass of H, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases.
Transcribed Image Text:Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. collected gas Suppose the H, gas evolved by a certain chemical reaction taking place at 35.0 °C is collected over water, using an chemical reaction water apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 110. mL. Sketch of a gas-collection apparatus Calculate the mass of H, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases.
Incorrect Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. collected Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. gas chemical reaction water Suppose the CO, gas evolved by a certain chemical reaction taking place at 45.0 °C is collected over water, using an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 39.5 mL. Sketch of a gas-collection apparatus Calculate the mass of CO, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases. Answer Submitted: 0.07 g Correct Answer: 0.060 g Explanation 10 mL • We'll need the temperature in kelvins: T= 45.0 °C = 318.15 K We're all set to use the re-arranged Ideal Gas Law: (0.90536 atm) · (0.0395 L) N= L atm The gas constant R is in the ALEKS Calculator, 0.082057 (318.15 K) mol K (0.90536 atm) · (0.0395 L) V. am mol · K. N= All units except moles cancel. Whew! |· (318.15 K) 0.082057 N=0.0013698... mol Use the calculator. Finally, to report the mass of CO, collected, we need a final moles-to-mass conversion using the molar mass of CO, (44.010 g/mol): (0.0013698 mol) -( 44.010 mol = 0.060285. c Don't forget to round your answer to 2 significant digits. EO ANSWER 0.060 g
Transcribed Image Text:Incorrect Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. collected Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. gas chemical reaction water Suppose the CO, gas evolved by a certain chemical reaction taking place at 45.0 °C is collected over water, using an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 39.5 mL. Sketch of a gas-collection apparatus Calculate the mass of CO, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases. Answer Submitted: 0.07 g Correct Answer: 0.060 g Explanation 10 mL • We'll need the temperature in kelvins: T= 45.0 °C = 318.15 K We're all set to use the re-arranged Ideal Gas Law: (0.90536 atm) · (0.0395 L) N= L atm The gas constant R is in the ALEKS Calculator, 0.082057 (318.15 K) mol K (0.90536 atm) · (0.0395 L) V. am mol · K. N= All units except moles cancel. Whew! |· (318.15 K) 0.082057 N=0.0013698... mol Use the calculator. Finally, to report the mass of CO, collected, we need a final moles-to-mass conversion using the molar mass of CO, (44.010 g/mol): (0.0013698 mol) -( 44.010 mol = 0.060285. c Don't forget to round your answer to 2 significant digits. EO ANSWER 0.060 g
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