1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dalvyx [7]
3 years ago
14

The "normal" lead content in human blood is about 0.40 part per million (i.e., 0.40 g of lead per million grams of blood). A val

ue of 0.80 part per million (ppm) is considered to be dangerous. How many grams of lead are contained in 6.0 x 10^3 g of blood (the amount in an average adult) if the lead content is 0.62 ppm?
Chemistry
2 answers:
Reil [10]3 years ago
7 0

Answer:

in 6.0 E3 g of blood at a concentration of 0.62 ppm there are  3.5g of lead content

Explanation:

  • blood density: 1.06 g/L
  • ppm ≡ mg Pb / L blood

⇒ V blood = 6.0E3gblood * L / 1.06gblood = 5660.37 L blood

<u> mass of lead:</u>

⇒ 5660.37 L blood * 0.62 mg Pb / L blood * 0.001 g / mg

⇒ mass = 3.509 g of lead

djyliett [7]3 years ago
7 0

Answer:

3.7 × 10⁻³ g Pb

Explanation:

0.62 parts per million means that there are 0.62 g of lead per million grams of blood (10⁶ grams of blood). In order to find the grams of lead on 6.0 × 10³ grams of blood (the amount in an average adult), we will use a conversion fraction.

6.0 × 10³ g blood × (0.62 g Pb/ 10⁶ g blood) = 3.7 × 10⁻³ g Pb

You might be interested in
How does more greenhouse gases in the Earth's atmosphere affect earth's temperature?
Mumz [18]

Explanation:

Greenhouse gasses in Earth's atmosphere affect Earth's temperature by making it hotter. Greenhouse gasses make the Earth warmer by trapping heat. You can think of greenhouse gasses as Earth's blanket.

5 0
2 years ago
Read 2 more answers
Helium does not usually react with other substances. Does this mean that helium has no chemical properties? Explain.
Sedaia [141]
Everything has chemical properties it depends on the reactivity and the reactivity of the other element and what form it is in
3 0
3 years ago
What is the difference between Mitosis and Meiosis?
kondor19780726 [428]
Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
7 0
2 years ago
What were the first fossils found in Antarctica? Where and when were they found?
nexus9112 [7]

Answer:

The first fossils were marine reptiles called plesiosaurs. They were found on Seymour Island in 1982. The first dinosaur fossil was an ankylosaur, found on James Ross Island in 1986.

Explanation:

7 0
3 years ago
The diagram illustrates the water cycle. Parts of the water cycle labeled U through Z. U: Water moving from a lake into the clou
marissa [1.9K]

The process described at locations U and X are Water changes from gas to liquid.

Answer: Option B.

<u>Explanation:</u>

Water cycle is a cyclical process when the water evaporates from the ground and then falls back on the ground in the form of rain or snow. The various stages of this process are water evaporating from lakes, ground, rivers and so on.

Then it goes up in the air, condenses. And from the condensation process, the clouds are formed. When they cool down up in the air, then the water falls back on the ground and precipitates from the cloud in the form of rain or in the form of snow.

4 0
3 years ago
Read 2 more answers
Other questions:
  • a test done under standard conditions is referred to as what in chemistry? A. STP B. Control C. Rate Constant D. Kinetics E. Non
    12·1 answer
  • Gases and particles which are put into the air or emitted by various sources are called __________. photochemical smog emissions
    11·1 answer
  • BaCl2(aq) + Na2CO3(aq) BaCO3(s) + NaCl(aq
    14·1 answer
  • In the reaction C5H8+____ O2= 8H2O+5CO2
    10·1 answer
  • An ion is an atom that has has gained or lost:
    7·1 answer
  • What do you notice about how plants get their energy in a DESERT ECOSYSTEM?
    12·2 answers
  • Materials move across a cell membrane in a process called _______.
    6·2 answers
  • The galaxy we live in is the Milky Way galaxy, and it is a spiral galaxy. Galaxies contains billions of which of the following?
    5·1 answer
  • Someone plssss help meeee !!!! How much energy is required to vaporize 112 g of water? ???
    15·1 answer
  • 2 HCl + Na2SO4 &gt; 2 NaCl + H2SO4
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!