Math

QuestionHow many nitrogen atoms are in one mole of serotonin, C10H12 N2O\mathrm{C}_{10} \mathrm{H}_{12} \mathrm{~N}_{2} \mathrm{O}? A. 1.2×10241.2 \times 10^{24} B. 6.02×10236.02 \times 10^{23} C. 7.2×10247.2 \times 10^{24} D. 6.02×10246.02 \times 10^{24}

Studdy Solution

STEP 1

Assumptions1. The molecular formula of serotonin is C10H12 \mathrm{C}_{10} \mathrm{H}_{12} \mathrm{~}_{} \mathrm{}, which indicates that there are nitrogen atoms in each molecule of serotonin. . One mole of any substance contains 6.02×10236.02 \times10^{23} entities (atoms, molecules, etc.). This is known as Avogadro's number.

STEP 2

First, we need to find the number of nitrogen atoms in one molecule of serotonin. This is given by the subscript next to the nitrogen symbol () in the molecular formula.
NumberofNitrogenatomsinonemoleculeofserotonin=2Number\, of\, Nitrogen\, atoms\, in\, one\, molecule\, of\, serotonin =2

STEP 3

Next, we need to find the number of nitrogen atoms in one mole of serotonin. We do this by multiplying the number of nitrogen atoms in one molecule of serotonin by Avogadro's number.
NumberofNitrogenatomsinonemoleofserotonin=NumberofNitrogenatomsinonemoleculeofserotonin×AvogadrosnumberNumber\, of\, Nitrogen\, atoms\, in\, one\, mole\, of\, serotonin = Number\, of\, Nitrogen\, atoms\, in\, one\, molecule\, of\, serotonin \times Avogadro's\, number

STEP 4

Now, plug in the values for the number of nitrogen atoms in one molecule of serotonin and Avogadro's number to calculate the number of nitrogen atoms in one mole of serotonin.
NumberofNitrogenatomsinonemoleofserotonin=2×6.02×1023Number\, of\, Nitrogen\, atoms\, in\, one\, mole\, of\, serotonin =2 \times6.02 \times10^{23}

STEP 5

Calculate the number of nitrogen atoms in one mole of serotonin.
NumberofNitrogenatomsinonemoleofserotonin=2×.02×1023=1.2×1024Number\, of\, Nitrogen\, atoms\, in\, one\, mole\, of\, serotonin =2 \times.02 \times10^{23} =1.2 \times10^{24}So, there are 1.2×10241.2 \times10^{24} nitrogen atoms in one mole of serotonin.

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