几道英文版的化学题,
1.Asolutionislabeled"0.450Mmagnesiumnitrate."Calculatetheconcentrationofeachionpresentinsolution.
2.CalculatethenumberofmolesofKOHin150.0mLofa0.500MKOHsolution.
3.Cauculatethenewconcentrationwhen50.0mLofwaterisaddedto725.0mLof1.25MNaCl.