A . 80
B . 100
C . 60
[单选题]0.02mol/LHCl溶液500mL,配制成0.01mol/L溶液加入()mL蒸馏水。A . 50B . 200C . 500D . 300
[单选题]将5mL10mol/L盐酸稀释为250mL溶液,再从稀释后的溶液中取出10mL溶液的摩尔浓度是().A . 0.08mol/LB . 0.2mol/LC . 0.5mol/LD . 1mol/L
[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.2mol/LB.1mol/LC.5mol/LD.4mol/LE.3mol/L
[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 . 4mol/LE . 3mol/L
[单选题]将浓度为5mol/LNaOH溶液100mL,加水稀释至500mL,则稀释后的溶液浓度为()mol/L。A .1B .2C .3D .4
[单选题,A2型题,A1/A2型题] 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 . 4mol/LB . 2mol/LC . 5mol/LD . 1mol/LE . 3mol/L
[单选题]将100ml的10%HCL溶液稀释成200ml的5%的HCL溶液,需加水()。A . 500mlB . 100mlC . 10ml
[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.