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max2010maxim [7]

3 years ago

12

Explain what it means to have a positive percent error value and a negative percent value.

1 answer:

pentagon [3]3 years ago

4 0

Answer:

The error of an experiment is the difference between the experimental and accepted values. If the experimental value is less than the accepted value, the error is negative. If the experimental value is larger than the accepted value, the error is positive.

Explanation:

I hope that helped if it did mark me brainlest! i really need it :(

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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.

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

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

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

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

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