Question

How many C-atoms are present in 2.6 micromoles of $C_6{H}_{12}{O}_6$?

• A. $3.13\times {10}^{16}$
• B. $6.26\times {10}^{16}$
• C. $1.56\times {10}^{16}$
• D. $9.39\times {10}^{16|}$

Answer 1

The correct option is D $9.39\times {10}^{16|}$

1 mole of $C_6{H}_{12}{O}_6$ contains 6 moles of C-atoms.
So, 2.6 micromoles of $C_6{H}_{12}{O}_6$ will contain $2.6\times 6=15.6$ micromoles of C-atoms.
Again, 1 mole of C-atoms = $6.022\times {10}^{23}$ C-atoms.
Therefore, 15.6 micromoles of C-atoms $=15.6\times {10}^{-6}\times 6.022\times {10}^{23}$ C-atoms.
$=9.39\times {10}^{16}$ C-atoms