1. Tardigrade
  2. Question
  3. Chemistry
  4. A silicon chip used in an integrated circuit of computer has a mass of 5.68 mg. The number of Si atoms present in this chip are

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A silicon chip used in an integrated circuit of computer has a mass of $5.68\, mg$. The number of $Si$ atoms present in this chip are

ManipalManipal 2016

Solution:

Molar mass of silicon $=28\, g =28000\, mg$
$\because 28000 \,mg$ of silicon contain $6.022 \times 10^{23}$ atoms
$\therefore 5.68 \,mg$ of silicon contain $\frac{6.022 \times 10^{23}}{28000} \times 5.68$
$=0.00122 \times 10^{23}=1.22 \times 10^{20}$ atoms