Answer
$4.04 \times 10^{-23}\ g$
Work Step by Step
Using our knowledge of units, we find:
$24.3 \times 1.66 \times 10^{-24}\ g $
To convert to scientific notation, move the decimal to the right or left, counting the number of times that you do so, until you get a number that is at least 1 but that is less than 10. If you moved the decimal right, the number of times the decimal is moved will be negative, while moving left yields a positive number. Then, raise 10 to that number. This gives:
$4.04 \times 10^{-23}\ g$
