Caffeine, Cs H10 N4O2, is a stimulant foundin tea and coffee. Asample of thesubstance wasdissolved in 45.0 g ofchloroform, CHCl3,-2to give a 7.82 × 10-²m solution. Howmany grams ofcaffeine were in thesample?SubmitAnswergTry AnotherVersion10 item attemptsremaining

The molality of a solution is the number of moles of solute dissolved per kg of the solvent.

Caffeine, C8H10 N4 O2 , is a stimulant found in tea and coffee. A sample of the substance was dissolved in 45.0 g of chloroform, CHCl3, to give a 7.82 x 10-² m solution. How many grams of caffeine were in the sample?

Caffeine, C8H10 N4 O2 , is a stimulant found in tea and coffee. A sample of the substance was dissolved in 45.0 g of chloroform, CHCl3, to give a 7.82 x 10-² m solution. How many grams of caffeine were in the sample?

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...

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

Caffeine, Cs H10 N4O2
, is a stimulant found
in tea and coffee. A
sample of the
substance was
dissolved in 45.0 g of
chloroform, CHCl3,
-2
to give a 7.82 × 10-²
m solution. How
many grams of
caffeine were in the
sample?
Submit
Answer
g
Try Another
Version
10 item attempts
remaining

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