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3 years ago

Which type of molecule forms structures in cells and stores energy? I NEED HELP

Chemistry

1 answer:

olga2289 [7]3 years ago

7 0

Answer:

Lipid forms structures in cells and stores energy

Explanation:

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Given 1.00 grams of each of the following radioisotopes, Ca-37, U-238, P-32 and Rn-222,which would have the least remaining orig

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1) Ca-37, with a half-life of 181.1(10) ms.

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3 years ago

Natasha and Reanna observe a large airplane in the troposphere. Which experimental setup below would best determine how changing

snow_lady [41]

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Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the various organs of the body. I

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Answer : The number of iron atoms present in each red blood cell are, $1.077\times 10^9$

Explanation :

First we have to calculate the moles of iron.

$\text{Moles of iron}=\frac{\text{Mass of iron}}{\text{Molar mass of iron}}=\frac{2.90g}{55.85g/mole}=0.0519moles$

Now we have to calculate the number of iron atoms.

As, 1 mole of iron contains $6.022\times 10^{23}$ number of iron atoms

So, 0.0519 mole of iron contains $0.0519\times 6.022\times 10^{23}=3.125\times 10^{22}$ number of iron atoms

Now we have to calculate the number of iron atoms are present in each red blood cell.

Number of iron atoms are present in each red blood cell = $\frac{\text{Number of iron atoms}}{\text{Total number of red blood cells}}$

Number of iron atoms are present in each red blood cell = $\frac{3.125\times 10^{22}}{2.90\times 10^{13}}$

Number of iron atoms are present in each red blood cell = $1.077\times 10^9$

Therefore, the number of iron atoms present in each red blood cell are, $1.077\times 10^9$

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2 years ago

(This is rly for science but there’s no category for that) Which statement best describes how scientists and engineers work toge

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Answer:

A. Engineers come up with scientific questions when they are developing their design, and scientists do research to answer them.

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3 years ago