Physical Science
Physical Science
11th Edition
ISBN: 9780077862626
Author: Bill Tillery, Stephanie J. Slater, Timothy F. Slater
Publisher: McGraw-Hill Education
Question
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Chapter 11, Problem 7PEB

(a)

To determine

The percent of average amount of lead in a person.

(a)

Expert Solution
Check Mark

Answer to Problem 7PEB

Solution:

2.5×105%

Explanation of Solution

Given:

The blood of the average American contained 0.25 ppm lead.

The danger level of lead poisoning is 0.80 ppm.

Formula used:

Write the expression for the percent of concentration.

% concentartion=ppm of lead1×104 ppm%

Explanation:

Recall the expression for the percent of concentration.

% concentartion=ppm of lead1×104 ppm%

Substitute 0.25 ppm for ppm of lead.

% concentartion=0.25 ppm1×104 ppm%=2.5×105%

Conclusion:

The percent of the average person lead are 2.5×105%.

(b)

To determine

The lead would be in an average of 80 kg person.

(b)

Expert Solution
Check Mark

Answer to Problem 7PEB

Solution:

0.02 g

Explanation of Solution

Given:

The blood of the average American contained 0.25 ppm lead.

The danger level of lead poisoning is 0.80 ppm.

Formula used:

Write the expression for the percent of part.

% of part=mass of partmass of whole×100% of whole

Explanation:

Convert kg to g.

80 kg=80 kg(103 g1 kg)=80,000 g

Refer the part (a) to the value of % of part.

2.5×105%

Recall the expression for the percent of part.

% of part=mass of partmass of whole×100% of whole

Rearrange:

mass of part=mass of whole100% of whole×% of part

Substitute 2.5×105% for % of part and 80,000 g for mass of whole.

mass of part=80,000 g of whole100% of whole×2.5×105%=0.02 g

Conclusion:

The lead would be in an average 80 kg person are 0.02 g.

(c)

To determine

The lead would be in an average person need to accumulate to reach the danger level.

(c)

Expert Solution
Check Mark

Answer to Problem 7PEB

Solution:

8×105%

Explanation of Solution

Given:

The blood of the average American contained 0.25 ppm lead.

The danger level of lead poisoning is 0.80 ppm.

Formula used:

Write the expression for the percent of concentration.

% concentartion=ppm of lead1×104 ppm%

Explanation:

Recall the expression for the percent of concentration.

% concentartion=ppm of lead1×104 ppm%

Substitute 0.80 ppm for ppm of lead.

% concentartion=0.80 ppm1×104 ppm%=8×105%

Conclusion:

The lead would be in an average person need to accumulate to reach the danger level

are 8×105%.

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Chapter 11 Solutions

Physical Science

Ch. 11 - Prob. 11ACCh. 11 - Prob. 12ACCh. 11 - Prob. 13ACCh. 11 - Prob. 14ACCh. 11 - Prob. 15ACCh. 11 - Prob. 16ACCh. 11 - Prob. 17ACCh. 11 - Prob. 18ACCh. 11 - Prob. 19ACCh. 11 - Prob. 20ACCh. 11 - Prob. 21ACCh. 11 - Prob. 22ACCh. 11 - Prob. 23ACCh. 11 - Prob. 24ACCh. 11 - Prob. 25ACCh. 11 - Prob. 26ACCh. 11 - Prob. 27ACCh. 11 - Prob. 28ACCh. 11 - Prob. 29ACCh. 11 - Prob. 30ACCh. 11 - Prob. 31ACCh. 11 - Prob. 32ACCh. 11 - Prob. 33ACCh. 11 - Prob. 34ACCh. 11 - 35. The ice that forms in freezing seawater...Ch. 11 - Prob. 36ACCh. 11 - Prob. 37ACCh. 11 - Prob. 38ACCh. 11 - Prob. 39ACCh. 11 - Prob. 40ACCh. 11 - Prob. 41ACCh. 11 - Prob. 42ACCh. 11 - Prob. 43ACCh. 11 - Prob. 44ACCh. 11 - Prob. 45ACCh. 11 - Prob. 46ACCh. 11 - Prob. 47ACCh. 11 - Prob. 48ACCh. 11 - Prob. 49ACCh. 11 - Prob. 1QFTCh. 11 - Prob. 2QFTCh. 11 - Prob. 3QFTCh. 11 - 4. A deep lake in Minnesota is covered with ice....Ch. 11 - Prob. 5QFTCh. 11 - Prob. 6QFTCh. 11 - Prob. 7QFTCh. 11 - Prob. 8QFTCh. 11 - Prob. 9QFTCh. 11 - Prob. 10QFTCh. 11 - 11. Explain why a pH of 7 indicates a neutral...Ch. 11 - 1. What are the basic differences and...Ch. 11 - 2. Compare and contrast the situations where you...Ch. 11 - Prob. 3FFACh. 11 - 4. What is the same and what is different between...Ch. 11 - Prob. 5FFACh. 11 - Prob. 6FFACh. 11 - Prob. 7FFACh. 11 - Describe at least four different examples of how...Ch. 11 - 1. What is the percent by weight of a solution...Ch. 11 - 2. What is the percent by weight of a solution...Ch. 11 - Prob. 3PEBCh. 11 - 4. What is the volume of water in a 500 mL bottle...Ch. 11 - 5. If a definition of intoxication is an alcohol...Ch. 11 - 6. How much pure alcohol is in a 355 mL bottle of...Ch. 11 - Prob. 7PEB
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