The total number of atoms in 9g of water are A. 3.01 x 1023 B. 4.51 x 1023 C. 6.02 x 1023 D. 9.03 x 1023
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Answer:
A) 3.01 × 10²³
Explanation:
Molar mass of water = 18g
No. of moles in 9g of water = 9/18 = 0.5
No. of atoms in 1 mole = 6.022 × 10²³
Therefore, no. of atoms in 0.5 mole of water
= 0.5 × 6.022 × 10²³
= 3.0110 × 10²³
or 3.01 × 10²³
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