kajetsya proporciya doljna bit.
1) 1,5-25%
x---100%
1,5x100/25=6 kg
1)m(NaOH)=m(р-ра)*100%/ω(р-ра)
m(NaOH)=1,5 кг*100%/25%=6 кг
kajetsya proporciya doljna bit.
1) 1,5-25%
x---100%
1,5x100/25=6 kg
1)m(NaOH)=m(р-ра)*100%/ω(р-ра)
m(NaOH)=1,5 кг*100%/25%=6 кг