WBJEE · Chemistry · Some Basic Concepts of Chemistry
How many oxygen atoms are present in 0.36 g of a drop of water at STP?
- A \(6.023 \times 10^{22}\)
- B \(1.205 \times 10^{22}\)
- C \(6.023 \times 10^{23}\)
- D \(1.205 \times 10^{23}\)
Answer & Solution
Correct Answer
(B) \(1.205 \times 10^{22}\)
Step-by-step Solution
Detailed explanation
0.36 g water drop has \(\frac{0.36}{18}\) moles \(\frac{0.36}{18}\) moles of water has \(\frac{0.36}{18} \times 6.023 \times 10^{23}\) molecules of water 1 molecule of water has 1 oxygen atom. \(\therefore\) Number of O atoms…
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