Question -
Find the number of hydrogen atoms in 9.033×1023 molecules of water.
Options:
A .  18.066×1023
B .  9.033×1023
C .  4.52×1023
D .  6.022×1023
Answer: Option A : A The chemical formula of water is H2O. One molecule of water has 2 hydrogen atoms. 9.033×1023 molecules of water will have 2×9.033×1023=18.066×1023 atoms of hydrogen.
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