天气预报15天查询> 其他> 如何测量氢气的质量

如何测量氢气的质量

更新时间: 2020-09-16 00:00:00     

方法一:

先把氢气充入气球内,在气球下挂一个已知质量的法码;放在天平上称量,然后把氢气放干净再称一次;两次的差值除以重力加速度即为氢气的浮力,氢气的浮力等于同体积空气的重量;根据两次称出的差值可算出氢气的体积,再根据质量等于密度乘以体积求出氢气质量。方法二:

直接用排水法,测出装着氢气的气球的体积;在氢气密度已知的情况下,根据质量等于密度乘以体积求出氢气质量。

关键词: 如何 测量 氢气 质量

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-2383958/ | 耗时:0.9214 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2383958 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2383958 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2383958 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1085576,1101921,1086095,1108664,980285,1089162,1077621,1055694,1095257,1073302,1102250,1104629,1090699,1071972,1100583,1077826,1092129,1069401,1102690,1060391,1065495,1042943,1055149,1066888,1068708,1076478,1072797,1106697,1100013,1102282) ORDER BY field (ArticleID,1085576,1101921,1086095,1108664,980285,1089162,1077621,1055694,1095257,1073302,1102250,1104629,1090699,1071972,1100583,1077826,1092129,1069401,1102690,1060391,1065495,1042943,1055149,1066888,1068708,1076478,1072797,1106697,1100013,1102282)