NCERT Class-9 Science Solutions: Chapter 3-Atoms and Molecules Part 8 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 32:

Fill in the missing data in the Table

Missing Data in the Table (Q)
Species Property
No. of moles________________
No. of particles________________________


Missing Data in the Table (A)
Species Property
No. of moles0.55
No. of particles

Question 33:

The visible universe is estimated to contain stars. How many moles of stars are present in the visible universe?


Question 34:

What is the SI prefix for each of the following multiples and submultiples of a unit?


  1. Kilo
  2. Deci
  3. Centi
  4. Micro
  5. Nano
  6. Pico
SI Prefixes

Question 35:

Express each of the following in kilograms