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If the atomic mass of sodium is 23, the ...

If the atomic mass of sodium is `23`, the number of moles in `46gm` of sodium is:

A

1

B

2

C

2.3

D

4.6

Text Solution

Verified by Experts

The correct Answer is:
B
No. of moles `=("Given mass")/("Molar mass") = 46/23 =2`
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MTG IIT JEE FOUNDATION-ATOMS AND MOLECULES -EXERCISE (MULTIPLE CHOICE QUESTIONS LEVEL-1)
  1. Chemical formula of ferric oxide is:

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  2. Mass of 1 mole of nitrogen atoms is:

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  3. If the atomic mass of sodium is 23, the number of moles in 46gm of sod...

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  4. How many molecules are present in one in one gram of hydrogen?

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  5. In which of the following the valency of each of the constituent eleme...

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  6. Number of moles of water present in 180 g of water will be:

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  7. Mass of 3 moles of NaOH in grams is:

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  8. Which one of the following statements is incorrect?

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  9. The volume occupied by 1 mole atom of a diatomic gas at STP is

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  10. Molecules of phosphorus and ammonia are respectively:

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  11. Which of the following molecules has highest number of particles?

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  12. Which one of the following parts of gases contains the same number of ...

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  13. Weight of 6.022 xx 10^(20) atoms of silver (at. mass 108 u) is

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  14. The number of carbon atoms in 1 g of CaCO3 is,

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  15. In carbon disulphide (CS2), the mass of sulphur in combination with 3....

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  16. Which one of the following statements is true?

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  17. Two gaseous sample were analysed. One contained 1.2 g of carbon and 3....

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  18. 20.8g of BaCI2 on reaction with 9.8g of H2SO4 produces 7.3 g of HCI an...

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  19. The number of atoms in 4.25g of NH(3) is approximately

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  20. A sample of phosphorus trichloride (PCl(3)) contains 1.4 moles of the ...

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