If 8.0g of sulphur contains X atoms, how many atoms are present in 24.0g of carbon?
(Relative atomic masses: C = 12.0, S = 32.0)
A. 3X
B. 4X
C. 6X
D. 8X
※ 請列明計算步驟。※
一條關於Reacting masses的選擇題(3)
2008-12-27 6:43 am
回答 (1)
2008-12-27 8:26 am
✔ 最佳答案
The answer is D.
Avogadro constant = L mol-1
No. of moles of S atoms = 8/32 = 0.25 mol
No. of S atoms = 0.25L atoms
X = 0.25L
Hence, L = 4X
No. of moles of C atoms = 24/12 = 2 mol
No. of C atoms = 2L atoms = 2(4X) atoms = 8X atoms
=
收錄日期: 2021-04-25 13:51:07
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