(a)
The percent of average amount of lead in a person.
(a)
Answer to Problem 7PEB
Solution:
Explanation of Solution
Given:
The blood of the average American contained
The danger level of lead poisoning is
Formula used:
Write the expression for the percent of concentration.
Explanation:
Recall the expression for the percent of concentration.
Substitute
Conclusion:
The percent of the average person lead are
(b)
The lead would be in an average of
(b)
Answer to Problem 7PEB
Solution:
Explanation of Solution
Given:
The blood of the average American contained
The danger level of lead poisoning is
Formula used:
Write the expression for the percent of part.
Explanation:
Convert kg to g.
Refer the part (a) to the value of
Recall the expression for the percent of part.
Rearrange:
Substitute
Conclusion:
The lead would be in an average
(c)
The lead would be in an average person need to accumulate to reach the danger level.
(c)
Answer to Problem 7PEB
Solution:
Explanation of Solution
Given:
The blood of the average American contained
The danger level of lead poisoning is
Formula used:
Write the expression for the percent of concentration.
Explanation:
Recall the expression for the percent of concentration.
Substitute
Conclusion:
The lead would be in an average person need to accumulate to reach the danger level
are
Want to see more full solutions like this?
Chapter 11 Solutions
Physical Science
- Question 5: An antibody suspension is applied through a tube at a flow rate of 9 lit/min. The mass diffusivity of the antibody in the suspension is 75 um?/s. The tube has an internal diameter of 1.5 cm and a length of 20 cm. 5a. Calculate Sherwood number 5b. Calculate Schmidt number 5c. Calculate the rate of antibody deposition across the internal surface of the tube Antibody solution Density = 1050 kg/m³ Viscosity = 2 mPa.s Concentration = 5 mM Internal diameter = 1.5 cm Length = 20 cmarrow_forwardA blood sample 7.2 x 10-8 M of H+arrow_forwardCopper-64 is used in the form of copper acetate to study brain tumours. It has a half-life of 12.8 hours. If you begin with 15.0 mg of 64 Cu-labelled copper acetate, what mass in mg remains after 2 days and 16 hours?arrow_forward
- The equation for the decomposition rate of leaves can be written as moekt You start with 100g of palm leaves. Estimate the remaining mass of leaves after 7, 14, and 21 days. Assume the leaf has a decomposition rate of k=0.07. mtarrow_forwardIt has been suggested that Napoleon died as a result of arsenic poisoning since the growing end of his hair has been found, through NAA analysis, to have abnormally high levels of arsenic. What hair sample mass (in grams) is needed to detect arsenic with a concentration of 0.001 ppm? NEED TYPING DETAIL ANS NOT HANDWRITTENarrow_forwardHow long would it take for a microbial community under exponential growth to grow to 14x it's initial size with a reaction rate constant of 0.5/day? O a. t=5.378 day O b. t=5.278 day Oc. t 5.078 day O d. t 5.178 dayarrow_forward
- A fast-food company advertises that the pre-cooked weight for its burgers is, on average, 0.2 kg. The company runs a regular quality control test that involves weighing a sample of burgers to see if the burgers are too light or too heavy. If the sample mean weight is significantly different than 0.2 kg, then they recycle the entire batch. What are appropriate hypotheses for the company's significance test?arrow_forward0.055 d 2 0.637 chool A human population of 10,000 individuals has a birth rate of 90 per every 1000 persons and a death rate of 16 per every 1000 individuals. Calculate the yearly increase of the population growth. O 740 individuals/year O 11,074 individuals/year O 10,074 individuals/year O 74 individuals/year The bluestreak cleaner wrasse is a fish that inhalats coral reefs. These fish eat parasites off of larger fish. The larger fish benefit from increased health. In return, the wrasse receive nutrition and protection from the larger fish. What type of interaction is this? O Mutualism O Parasitismarrow_forwardA 500 gal capacity tank initially contains a salt solution consisting of 200 gal of water and 3 lbs of salt/gal. A solution of 2 Ib/gal flows in at the rate of 3 gal/min and the resulting mixture flows out at the rate of 2 gal/min. What is the concentration in the tank when it starts to overflow? O 2.352 Ib/gal O 1.873 lb/gal O 1032 lb O 2.064 lb/galarrow_forward
- - What is the value of activity index ?1? - What is the value of activity index ?2? - Is the safety requirement met? Ordinary concrete K concentration = (223,98 ± 37,12) Bq/kg Ra concetration = (8,53 ± 5,59) Bq/kg Th concentration = (7,95 ± 2,84) Bq/kg - What is the value of activity index ?1? - What is the value of activity index ?2? - Is the safety requirement met? Ordinary concrete K concentration = (223,98 ± 37,12) Bq/kg Ra concetration = (8,53 ± 5,59) Bq/kg Th concentration = (7,95 ± 2,84) Bq/kgarrow_forwardWhat is the half-life, t½, (in hr) when the concentration was 100 mg/L?arrow_forwardAfter an injection of Drug Y, the concentration of the drug in the bloodstream drops at the continuous rate of 0.020 per hour. Find the concentration of the drug 20 hours after receiving an injection with initial concentration of 5.0 mg/L. А) 3.35 mg B) 4.15 mg с) 3.34 mg D 4.0 mgarrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON