
A silicon chip used in an integrated circuit of a computer has a mass of 5.68 mg. The number of Si atoms present in the chip are:
(A) atoms
(B) atoms
(C) atoms
(D) None of these
Answer
498.6k+ views
Hint: Since the mass of the silicon chip is given, we need to find the number of moles of silicon present in the chip. After that we can find the number of atoms present in the chip by using the below formula:
Number of atoms = (n) x ( )
Where,
n is the number of moles,
is the Avogadro number (Value is ).
Complete answer:
Silicon is widely used in the manufacture of circuit chips, transistors, diodes. The reason being that silicon is abundant in nature and a semiconductor. In addition to that silicon is easy to refine as there are less impurities; purity of about 96-97% is obtained.
It is given to us that the mass of the silicon chip is 5.68 mg. The molar mass of silicon is 28 g i.e. 28000 mg.
We will now substitute the values mentioned above in the formula to find the number of atoms of silicon present in the chip:
Number of moles of Si present(n) =
Number of atoms = (n) x ( )
Number of atoms = ( ) x ( )
= atoms.
Therefore, the correct answer is option (A).
Note:
While calculating the number of moles remember to convert both the quantities to the same unit(either g or mg) and then find the number of moles. This is a common error made by many students.
Number of atoms = (n) x (
Where,
n is the number of moles,
Complete answer:
Silicon is widely used in the manufacture of circuit chips, transistors, diodes. The reason being that silicon is abundant in nature and a semiconductor. In addition to that silicon is easy to refine as there are less impurities; purity of about 96-97% is obtained.
It is given to us that the mass of the silicon chip is 5.68 mg. The molar mass of silicon is 28 g i.e. 28000 mg.
We will now substitute the values mentioned above in the formula to find the number of atoms of silicon present in the chip:
Number of moles of Si present(n) =
Number of atoms = (n) x (
Number of atoms = (
=
Therefore, the correct answer is option (A).
Note:
While calculating the number of moles remember to convert both the quantities to the same unit(either g or mg) and then find the number of moles. This is a common error made by many students.
Latest Vedantu courses for you
Grade 10 | MAHARASHTRABOARD | SCHOOL | English
Vedantu 10 Maharashtra Pro Lite (2025-26)
School Full course for MAHARASHTRABOARD students
₹31,500 per year
Recently Updated Pages
Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
State and prove Bernoullis theorem class 11 physics CBSE

What are Quantum numbers Explain the quantum number class 11 chemistry CBSE

Write the differences between monocot plants and dicot class 11 biology CBSE

Why is steel more elastic than rubber class 11 physics CBSE

Explain why a There is no atmosphere on the moon b class 11 physics CBSE

State the laws of reflection of light
