chemistry

Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011 % Pb by mass. How much of the water (in mL ) contains 165mg of Pb? (Assume a density of 1.0 g/ml.)

  1. 👍 0
  2. 👎 0
  3. 👁 308
  1. Use proportions:

    (165/1000) g / 0.0011%
    =0.165 g/0.000011
    =15,000 mL

    1. 👍 0
    2. 👎 0
    posted by MathMate
  2. But when you write it up to submit it please include the units so the equations balance!

    1. 👍 0
    2. 👎 0
    posted by Dr Russ

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0012% Pb by mass. How much of the water in milliliters contains 145 mg of Pb? (Assume that the density of the solution is

    asked by Kelsey G on November 30, 2010
  2. chemistry

    pleast help me work this prob lead is a toxic meatal that affects the central nervous system. a Pb-contaminated water sample contains 0.0011% Pb by mass. What vilume of the water in milliliters contains 115g of Pb? (assume that

    asked by swtnblk on November 6, 2011
  3. chemistry

    pleast help me work this prob lead is a toxic meatal that affects the central nervous system. a Pb-contaminated water sample contains 0.0011% Pb by mass. What vilume of the water in milliliters contains 115g of Pb? (assume that

    asked by swtnblk on November 5, 2011
  4. Biology

    "Emma has difficulty sleeping. Her doctor prescribes Deflex. Deflex is a drug which affects the nervous system. Suggest and explain how Deflex affects the nervous system to help Emma sleep." I have missed a lot of time off of

    asked by on December 10, 2014
  5. science

    please help me in science i don`t now what is the answer of my assignment.dis is a question. 1.what are the main division of nervous system? 2.what are the organs of the central on nervous system? 3.what are the parts of the

    asked by leane hart garcia on July 4, 2012
  6. SCI 275

    Resource: Chapter 18 Select one case study or an example, from Chapter 18 that describes the impacts of a toxic substance on human health. Answer the following questions based on the risk assessment principles presented in Ch. 18,

    asked by Kelly on May 15, 2014
  7. Phychology CHECK my answers

    My answers have the star 1. The nervous system is the body’s ______________ network. (1 point) communication*** organization reactive production 2. The central nervous system (CNS) consists of the brain and the ___________. (1

    asked by anon on December 5, 2017
  8. Psychology

    Your brain has instructed your muscles to move so an oncoming vehicle. What division of your nervous system carried the information to your muscles? Answer A. sympathetic nervous system B. somatic nervous system C. autonomic

    asked by Anonymous on March 28, 2012
  9. chemistry

    a sample of indium chloride is known to be contaminated with sodium chloride. The contaminated sample weighs 2.87 g. When the contaminated sample is treated with excess AgNO3(aq), 5.79 grams of AgCl(s) are obtained. What is the

    asked by Anonymous on November 22, 2010
  10. anatomy & physiology

    the portion of the nervous system that controls involuntary activities is a subdivision of the _______ nervous system? a) sympathetic b) central c)peripheral d) parasympathetic

    asked by AB on September 5, 2011

More Similar Questions