必修一化学摩尔的一些公式 高一化学摩尔质量怎么算?有什么公式吗?
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(2)n=N/NA,N是微粒数,NA是阿附加德罗常数
(3)n=V/Vm,V是气体的体积(L),Vm是一定条件下的气体摩尔体积(L/mol),在标准状况下,Vm=22.4L/mol
(4)n=cV,c是溶液中溶质的物质的量浓度(mol/L),V是溶液的体积(L)
2、知道和熟练常见的转换及推论的公式
(1)物质的量浓度(c)与质量分数(w)之间的转换
c=1000dw/M,d是溶液的密度(g/cm3),M是溶质的摩尔质量(g/mol)
(2)饱和溶液的质量分数(w)与溶解度(s)之间的转换
w=s/(100+s)
(3)相同状况下,气体的体积之比=物质的量之比=气体的分子数之比
V(A):V(B)=n(A):n(B)=N(A):N(B)
(4)相同状况下,气体的密度之比=摩尔质量之比=相对分子质量之比
d(A):d(B)=M(A):M(B)=Mr(A):Mr(B)
所以,若说某气体对氢气的相对密度为16,即该气体的Mr=16×2=32
n=m/v
n=N/NA
n=V/Vm
n=m/M
n=VC
n=m/v
n=N/NA
n=V/Vm
n=m/M
n=m/M
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绛旓細n=m/M n=N/NA (姘斾綋)n=V/Vm 锛堢墿璐ㄧ殑閲忔祿搴︼級c=婧惰川鐗╄川鐨勯噺/婧舵恫鐨勪綋绉 c=1000*婧舵恫瀵嗗害*鐗╄川鐨勮川閲忕殑鐧惧垎姣旀祿搴/婧惰川鐨勬懇灏旇川閲 鐗╄川鐨勯噺鈥斺攏 鐗╄川鐨勮川閲忊斺攎 鎽╁皵璐ㄩ噺鈥斺擬
绛旓細n=m/M n=N/NA (姘斾綋)n=V/Vm 锛堢墿璐ㄧ殑閲忔祿搴︼級c=婧惰川鐗╄川鐨勯噺/婧舵恫鐨勪綋绉 c=1000*婧舵恫瀵嗗害*鐗╄川鐨勮川閲忕殑鐧惧垎姣旀祿搴/婧惰川鐨勬懇灏旇川閲
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