m(NaOH)= 23+16+1=40
m(O)=16
w(O)= m(O)/m(NaOH)= 16/40=0,4 или можно в процентах
w(O)= m(O)*100/m(NaOH)= 40%
m( Na)= 23
w(Na)= 23/40= 0,575= 57,5%
m(H)= 1/40=0,025= 2.5%
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m(NaOH)= 23+16+1=40
m(O)=16
w(O)= m(O)/m(NaOH)= 16/40=0,4 или можно в процентах
w(O)= m(O)*100/m(NaOH)= 40%
m( Na)= 23
w(Na)= 23/40= 0,575= 57,5%
m(H)= 1/40=0,025= 2.5%