A 2.0 g sample of washing soda, Na2CO3 , 10 H2O has 2.4 x 10^21 carbon atoms. how many oxygen atoms are present in 2.0 g of washing soda?
回答 (1)
2018-07-31 12:43 pm
Each formula unit of Na₂CO₃•10H₂O contains 1 carbon atom and 13 oxygen atom.
(2.4 × 10²¹ carbon atoms) × (13 oxygen atoms / 1 carbon atom) = 3.1 × 10²² (to 2 sig. fig.)
(2.4 × 10²¹ carbon atoms) × (13 oxygen atoms / 1 carbon atom) = 3.1 × 10²² (to 2 sig. fig.)
收錄日期: 2021-05-01 22:25:10
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