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Evaluation of a Determinant

1In three mol...

Question

$1)$ In three moles of ethane $C_{2} H_{6},$ calculate the following:

$A)$ Number of moles of carbon atoms.

$2)$ In three moles of ethane $C_{2} H_{6},$ calculate the following:

$B)$ Number of moles of hydrogen atoms.

$3)$ In three moles of ethane $C_{2} H_{6},$ calculate the following:

$C)$ Number of molecules of ethane.

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Solution

$A)$ In three moles of ethane $C_{2} H_{6},$ calculate the following:

Number of moles of carbon atoms

$1$ mole of $C_{2} H_{6}$ contains $2$ moles of carbon atoms,

Number of moles of carbon atoms in $3$ moles of $C_{2} H_{6} = 2 \times 3 = 6 m o l$

$B)$ In three moles of ethane $C_{2} H_{6},$ calculate the following:

Number of moles of hydrogen atoms:

$1$ mole of $C_{2} H_{6}$ contains $6$ moles of hydrogen atoms,

Number of moles of hydrogen atoms in $3$ moles of $C_{2} H_{6} = 3 \times 6 = 18 m o l$

$C)$ In three moles of ethane $C_{2} H_{6},$ calculate the following:

number of moles of ethane.

$1$ mole of $C_{2} H_{6}$ contains $6.022 \times 10^{23}$ moles of ethane,

Number of molecules in $3$ moles of $C_{2} H_{6} = 3 \times 6.022 \times 10^{23} = 18.066 \times 10^{23}$

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