A . 0.1
B . 1
C . 0.04
D . 0.2
[单选题]98克纯硫酸完全溶于水后加水稀释至1升,其摩尔浓度是()。A .0.1MB .1MC .0.04MD .0.05M
[单选题]配制0.05mol/L硫酸溶液,需量取()浓硫酸加入水中稀释至1L。A .1.0mlB .2.8mlC .4.9mlD .28ml
[单选题]称取KCl0.447g和NaCl9.36g,溶于蒸馏水倒入1L容量瓶中,稀释至刻度,此时溶液中Na+、K+浓度相当于( )。(原子量K=39,Na=
[单选题]CNAOH=5mol/L的NaOH溶液100ml,加水稀释至500ml,则稀释后溶液的浓度是()。A.4mol/LB.2mol/LC.5mol/LD.
[单选题]CNaoh=5mol/L的NaOH溶液100ml,加水稀释至500ml,则稀释后溶液的浓度是A.2mol/LB.1mol/LC.5mol/LD.4mo
[单选题]CNaoh=5mol/L的NaOH溶液100ml,加水稀释至500ml,则稀释后溶液的浓度是()。A.2mol/LB.1mol/LC.5mol/LD.
[单选题]C=5mol/L的NaOH溶液100ml,加水稀释至500ml,则稀释后溶液的浓度是A.2mol/LB.1mol/LC.5mol/LD.4mol/LE
[单选题]CNaOH=5mol/L的NaOH溶液100ml,加水稀释至500ml,则稀释后溶液的浓度是A.2mol/LB.1mol/LC.5mol/LD.4mo
[单选题]c(NaOH)=5mol/L的NaOH溶液100mL,加水稀释至500mL,则稀释后溶液的浓度是( )。A.3mol/LB.4mol/LC.2mol
[单选题]c(NaOH)=5mol/L的NaOH溶液100mL,加水稀释至500mL,则稀释后溶液的浓度是( )。A.3mol/LB.4mol/LC.2mol