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
Akimi4 [234]
3 years ago
12

The human body is 0.0040% iron. How many milligrams of iron does a 165 pound person contain?​

Chemistry
1 answer:
Fofino [41]3 years ago
8 0

Answer:

in a body of 165 pounds, the iron content is 2993.707 mg

Explanation:

  • % iron = 0.0040% = (mass iron / mass human) * 100

⇒ mass iron / mass human = 4 E-5

∴ mass human = 165 pounds

⇒ mass iron = 165 pounds * 4 E-5

⇒ mass iron = 6.6 E-3 pounds * ( 453.592 g/pound ) * ( 1000 mg/g )

⇒ mass iron = 2993.707 mg iron

You might be interested in
Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the equation: at 250° 0.125 m pc
maksim [4K]
123456708212345670555555
6 0
4 years ago
Greenhouse gases in the atmosphere, such as carbon dioxide and water vapor, make earth warmer than it would be otherwise because
drek231 [11]
Greenhouse gases in the atmosphere, such as carbon dioxide and water vapor, make earth warmer than it would be otherwise because these gases ____""absorb infrared light emitted by the surface"""___
8 0
3 years ago
MARKING BRAINLIEST! please help asap, i need a and b, thank you
defon

The time required to reduce the concentration from 0.00757 M to 0.00180 M is equal to 1.52 × 10⁻⁴ s. The half-life period of the reaction is 9.98× 10⁻⁵s.

<h3>What is the rate of reaction?</h3>

The rate of reaction is described as the speed at which reactants are converted into products. A catalyst increases the rate of the reaction without going under any change in the chemical reaction.

Given the initial concentration of the reactant, C₀= 0.00757 M

The concentration of reactant after time t is C₁= 0.00180 M

The rate constant of the reaction, k = 37.9 M⁻¹s⁻¹

For the first-order reaction: C_t =C_0-kt

0.00180 = 0.00757 - (37.9) t

t =  1.52 × 10⁻⁴ s

The half-life period of the reaction: t_{\frac{1}{2} } =\frac{C_0}{2k}

t_{\frac{1}{2} } =\frac{0.00757}{2\times 37.9}

Half-life of the reaction = 9.98 × 10⁻⁵s

Learn more about the rate of reaction, here:

brainly.com/question/13571877

#SPJ1

5 0
1 year ago
Which of the following solutions will have the lowest boiling point?
Romashka-Z-Leto [24]
Boiling point of
glucose = 150°C
AlCl3 = 180°C
NaCl = 1,413°C
CaCl2 = 1,935°C

Therefore, the one with the lowest boililng point is glucose
3 0
4 years ago
Which of the following has electrons in a d orbital?<br> Mg<br> Si<br> Cr<br> Са
erica [24]
Cr.
Cr is the only element listed that is located in the d-block of the periodic table.
6 0
3 years ago
Other questions:
  • Which term refers to the speed at which reactants are converted into products?
    8·2 answers
  • 30. The of an object is different on every<br> planet in the solar system.
    11·1 answer
  • Part II. Formulas From Names
    11·2 answers
  • Which of the following atoms has the largest atomic radius? Provide an explanation
    8·1 answer
  • A vehicle travels 60. km north and then 40. km south. What is its total displacements?
    12·1 answer
  • The cereal you ate for breakfast was most like grown in a _____.
    10·2 answers
  • Which statement most accurately describes a chemical equation?
    6·1 answer
  • Aspirin was formed to reduce the irritation of salicylic acid. However, aspirin can still disturb the stomach. Which functional
    7·1 answer
  • Which element would have the greater difference between the first ionization energy and the second ionization energy
    5·1 answer
  • sam records the mass of his evaporating dish as 8.365 g. he records the mass of the evaporating dish and the sample of hydrate a
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!