Question

помогите пж с химией
1. дано: 2.дано
H2SO4 NaOH
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w(H)-? w(Na)-?
w(S)-? w(O)-?
w(O)-? w(H)-?

Answer 1

Mr(H₂SO₄)=98 гмоль
w(H) = $frac{2}{98}*100$%=2%
w(S)=$frac{32}{98}*100$%=32%
w(O)=$frac{64}{98}*100$%= 65%

Mr(NaOH)=23+16+1=40гмоль
w(Na)=$frac{23}{40}*100$%= 57,5%
w(O)=$frac{16}{40}*100$%= 40%
w(H)=$frac{1}{40} *100$%=2,5%