问题标题:
初三和高一化学题目求解维生素药片包含维生素500g,所以其中包含了多少摩尔和多少分子的维生素?Asampleofnitrogengashasavolumeof1.75LatSTP.HowmanymoleofN2arepresent?Calculatethemoleculesofeacho
问题描述:
初三和高一化学题目求解
维生素药片包含维生素500g,所以其中包含了多少摩尔和多少分子的维生素?
Asampleofnitrogengashasavolumeof1.75LatSTP.HowmanymoleofN2arepresent?
CalculatethemoleculesofeachofthefollowinggaswsallatSTP.
a.0.2molH2 b.0.2gO2 c.0.2LN2
4. Calculatethe volumeofeachofthefollowinggaswsallatSTP
a.4.4gCO2 b.0.71gCL2 C.3.2gCH4
5.Asampleofgashasadensity(密度)of1.96g/LatSTP.Determineitsmolarmass(摩尔质量)
6.WhatmassofHeisrequiredtofilla1.5LballoonatSTP?(He-4)
毛雨辉回答:
0.078mole0.078NA
a0.448L0.2NAb0.14L0.006NAc0.009NA
4a2.24Lb0.224Lc4.48L
543.9g/mol
60.27g
戎华回答:
前面2行是那道题
毛雨辉回答:
Asampleofnitrogengashasavolumeof1.75LatSTP.HowmanymoleofN2arepresent?0.078mole0.078NA
CalculatethemoleculesofeachofthefollowinggaswsallatSTP.
a.0.2molH2a0.2NAb.0.2gO2b0.006NAc.0.2LN2c0.009NA
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