Asingle hydrogen atom has a mass of 1.67x10^-24g. A sulfur has a atomic mass of32. Hw many sulfur atoms are required to reach 9mg of sulfur?
回答 (2)
2017-08-26 12:44 am
✔ 最佳答案
Mass of a sulfur atom = 32 × (1.67 × 10⁻²⁴) gNumber of sulfur atom required = (9 × 10⁻³ g) / [32 × (1.67 × 10⁻²⁴) g] = 1.68 × 10²⁰
2017-08-26 12:43 am
The atomic mass of sulfur is 32 times that of hydrogen. 9 mg is 9x10^-3 g.
收錄日期: 2021-04-18 17:45:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170825162446AAk47d7