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In 90 grams of water. a. How many molecules are present?b.What will be the total number of atoms? c. What will be the total number of electrons in this sample? |
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Answer» a. GMM= 18 g ∴ Number of molecules \(\frac{90}{18}\) x 6.022 x 1023 = 5 x 6.022 x 1023 b. ∴ Number of atoms = 3 × 5 × 6.022 × 1023 = 15 x 6.022 x 1023 c. Electrons in 1 H atom = 1 Electrons in 1 O atom = 8 Total electrons in H2O molecule 10 Total electrons in 90 g H2O = 10 × 5 × 6.022 × 1023 = 50 × 6.022 × 1023 |
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