Mass of NaOH containing 6.02 x 10^23 sodium atoms is:
Correct answer: C. 40 g
- A. 23 g
- B. 4.0 g
- C. 40 g
- D. 20 g
Explanation
NaOH : Na.1 mole : 6.02x1023 atoms40g : 6.02x1023 atoms. The mass of NaOH containing 6.02x1023 sodium atoms is 40 grams.The molar mass of NaOH is 40.00 grams per mole, and 1 mole of NaOH contains 6.02 x 1023 atoms of Na. So, 6.02 x 1023 sodium atoms will be present in 40 grams of NaOH.
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