搜狗做题网化学molar mass
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化学molar mass
1.find the molar mass of the following (hint use the periodic table)
-H -CL2 -Br -N2O4 -Na2S -NH3O -K2So
2.calculate how many moles you would have in the following
-10gH -50gCL2 -100gBr - 20gNa2s
3.calculate the mass of
-2molH -5mplNa2S -3.5molNH3O -1.75molK2SO4
1.find the molar mass of the following (hint use the periodic table)
-H -CL2 -Br -N2O4 -Na2S -NH3O -K2So
2.calculate how many moles you would have in the following
-10gH -50gCL2 -100gBr - 20gNa2s
3.calculate the mass of
-2molH -5mplNa2S -3.5molNH3O -1.75molK2SO4
第一个是求摩尔质量 就相当于原子量
H2 2g/mol Cl2 71g/mol Br2 160g/mol N2O4 92g/mol Na2S 78g/mol,你是不是题目抄错了NH3 17g/mol K2SO4 174g/mol,
第二个是算有多少摩尔 质量/摩尔质量
10gH 5mol 50gCL2 0.704mol 100gBr 0.625mol 20gNa2s 0.256mol
第三个是算有多少克 摩尔*摩尔质量
2molH2 4g 5molNa2S 390g 3.5molNH3 59.5g 1.75molK2SO4 261g
H2 2g/mol Cl2 71g/mol Br2 160g/mol N2O4 92g/mol Na2S 78g/mol,你是不是题目抄错了NH3 17g/mol K2SO4 174g/mol,
第二个是算有多少摩尔 质量/摩尔质量
10gH 5mol 50gCL2 0.704mol 100gBr 0.625mol 20gNa2s 0.256mol
第三个是算有多少克 摩尔*摩尔质量
2molH2 4g 5molNa2S 390g 3.5molNH3 59.5g 1.75molK2SO4 261g