Chemistry
Chemistry
4th Edition
ISBN: 9780393919370
Author: Thomas R. Gilbert
Publisher: NORTON
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Chapter 22, Problem 22.22QP

(a)

Interpretation Introduction

To determine: The concentration of cobalt expressed in parts per million.

Interpretation: The concentration of cobalt in grams per kilogram of solvent. Its concentration is to be calculated in parts per million.

Concept introduction: Parts per million by mass is the amount of solute in milligrams present in one kilogram of the substance.

Therefore, the concentration in ppm is calculated by the formula,

Concentrationinppm=MassofsoluteinmilligramsMassofsolventinkilograms

(a)

Expert Solution
Check Mark

Answer to Problem 22.22QP

The concentration of cobalt expressed in parts per million is 4.3×10-2ppm_.

Explanation of Solution

Given

The concentration of cobalt in grams per kilogram is 4.3×105g/kg.

Parts per million by mass is the amount of solute in milligrams present in one kilogram of the substance.

One gram is equal to 1000 milligram.

Therefore, 4.3×105g/kg is equal to 4.3×102mg/kg.

Thus, the concentration of cobalt is 4.3×10-2ppm_.

(b)

Interpretation Introduction

To determine: The concentration of boron expressed in parts per million.

Interpretation: The amount of boron in grams is given to be present in given mass in kilogram. Its concentration is to be calculated in parts per million.

Concept introduction: Parts per million by mass is the amount of solute in milligrams present in one kilogram of the substance.

Therefore, the concentration in ppm is calculated by the formula,

Concentrationinppm=MassofsoluteinmilligramsMassofsolventinkilograms

(b)

Expert Solution
Check Mark

Answer to Problem 22.22QP

The concentration of boron expressed in parts per million is 0.14ppm_.

Explanation of Solution

Given

The mass of boron is 0.014g.

The mass of the body is 100kg.

One gram is equal to 1000 milligram.

Therefore, 0.014g is equal to 14mg.

The concentration in ppm is calculated by the formula,

Concentrationinppm=MassofsoluteinmilligramsMassofsolventinkilograms

Substitute the value of mass of boron and body in the above equation.

Concentrationinppm=14mg100kg=0.14ppm

Therefore, the parts per million of boron is 0.14ppm_.

(c)

Interpretation Introduction

To determine: The concentration of chromium expressed in parts per million.

Interpretation: The amount of chromium in milligrams is given to be present in given mass. Its concentration is to be calculated in parts per million.

Concept introduction: Parts per million by mass is the amount of solute in milligrams present in one kilogram of the substance.

Therefore, the concentration in ppm is calculated by the formula,

Concentrationinppm=MassofsoluteinmilligramsMassofsolventinkilograms

(c)

Expert Solution
Check Mark

Answer to Problem 22.22QP

The concentration of chromium expressed in parts per million is 0.07ppm_.

Explanation of Solution

Given

The mass of cooper is 5mg.

The mass of the body is 70kg.

The concentration in ppm is calculated by the formula,

Concentrationinppm=MassofsoluteinmilligramsMassofsolventinkilograms

Substitute the value of mass of chromium and body in the above equation.

Concentrationinppm=5mg70kg=0.07ppm

Therefore, the parts per million of chromium is 0.07ppm_.

Conclusion
  1. a. The concentration of cobalt expressed in parts per million is 4.3×10-2ppm_.
  2. b. The concentration of boron expressed in parts per million is 0.14ppm_.
  3. c. The concentration of chromium in parts per million is 0.07ppm_.

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Chapter 22 Solutions

Chemistry

Ch. 22 - Prob. 22.6VPCh. 22 - Prob. 22.7VPCh. 22 - Prob. 22.8VPCh. 22 - Prob. 22.9VPCh. 22 - Prob. 22.10VPCh. 22 - Prob. 22.11QPCh. 22 - Prob. 22.12QPCh. 22 - Prob. 22.13QPCh. 22 - Prob. 22.14QPCh. 22 - Prob. 22.15QPCh. 22 - Prob. 22.16QPCh. 22 - Prob. 22.17QPCh. 22 - Prob. 22.18QPCh. 22 - Prob. 22.19QPCh. 22 - Prob. 22.20QPCh. 22 - Prob. 22.21QPCh. 22 - Prob. 22.22QPCh. 22 - Prob. 22.23QPCh. 22 - Prob. 22.24QPCh. 22 - Prob. 22.25QPCh. 22 - Prob. 22.26QPCh. 22 - Prob. 22.27QPCh. 22 - Prob. 22.28QPCh. 22 - Prob. 22.29QPCh. 22 - Prob. 22.30QPCh. 22 - Prob. 22.31QPCh. 22 - Prob. 22.32QPCh. 22 - Prob. 22.33QPCh. 22 - Prob. 22.34QPCh. 22 - Prob. 22.35QPCh. 22 - Prob. 22.36QPCh. 22 - Prob. 22.37QPCh. 22 - Prob. 22.38QPCh. 22 - Prob. 22.39QPCh. 22 - Prob. 22.40QPCh. 22 - Prob. 22.41QPCh. 22 - Prob. 22.42QPCh. 22 - Prob. 22.43QPCh. 22 - Prob. 22.44QPCh. 22 - Prob. 22.45QPCh. 22 - Prob. 22.46QPCh. 22 - Prob. 22.47QPCh. 22 - Prob. 22.48QPCh. 22 - Prob. 22.49QPCh. 22 - Prob. 22.50QPCh. 22 - Prob. 22.51QPCh. 22 - Prob. 22.52QPCh. 22 - Prob. 22.53QPCh. 22 - Prob. 22.54QPCh. 22 - Prob. 22.55QPCh. 22 - Prob. 22.56QPCh. 22 - Prob. 22.57QPCh. 22 - Prob. 22.58QPCh. 22 - Prob. 22.59QPCh. 22 - Prob. 22.60QPCh. 22 - Prob. 22.61QPCh. 22 - Prob. 22.62QPCh. 22 - Prob. 22.63QPCh. 22 - Prob. 22.64QPCh. 22 - Prob. 22.65QPCh. 22 - Prob. 22.66QPCh. 22 - Prob. 22.67QPCh. 22 - Prob. 22.68QPCh. 22 - Prob. 22.69QPCh. 22 - Prob. 22.70QPCh. 22 - Prob. 22.71QPCh. 22 - Prob. 22.72QPCh. 22 - Prob. 22.73QPCh. 22 - Prob. 22.74QPCh. 22 - Prob. 22.75QPCh. 22 - Prob. 22.76QPCh. 22 - Prob. 22.77QPCh. 22 - Prob. 22.78QPCh. 22 - Prob. 22.79QPCh. 22 - Prob. 22.80QPCh. 22 - Prob. 22.81QPCh. 22 - Prob. 22.82QPCh. 22 - Prob. 22.83QPCh. 22 - Prob. 22.84QPCh. 22 - Prob. 22.85QPCh. 22 - Prob. 22.86QPCh. 22 - Prob. 22.87QPCh. 22 - Prob. 22.88QPCh. 22 - Prob. 22.89QPCh. 22 - Prob. 22.90QPCh. 22 - Prob. 22.91QPCh. 22 - Prob. 22.92QPCh. 22 - Prob. 22.93QPCh. 22 - Prob. 22.94QPCh. 22 - Prob. 22.95QPCh. 22 - Prob. 22.96QPCh. 22 - Prob. 22.97QPCh. 22 - Prob. 22.98QPCh. 22 - Prob. 22.99QPCh. 22 - Prob. 22.100QP
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