oblicz zawartość procentową
a) tlenu w tlenie sodu
b)wodoru w metanie
a) m O2 -- 16 g
m Na2O = 62 g
mO2/mNa2O = 16/62 x 100% = 25,81 %
b) m H2 = 1g
m CH4 = 12+ 4x1 = 16 g
mH2/mCH4 = 4/16 x 100% = 25%
Na2O
23uNa*2+16uO=62u
62u-100%
16u-x%
x=16*100/62=26% w przyblizeniu
Metan-CH4
12uC+1uH*4=16u
16u-100%
4u-x%
x=4*100/16=25%
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a) m O2 -- 16 g
m Na2O = 62 g
mO2/mNa2O = 16/62 x 100% = 25,81 %
b) m H2 = 1g
m CH4 = 12+ 4x1 = 16 g
mH2/mCH4 = 4/16 x 100% = 25%
Na2O
23uNa*2+16uO=62u
62u-100%
16u-x%
x=16*100/62=26% w przyblizeniu
Metan-CH4
12uC+1uH*4=16u
16u-100%
4u-x%
x=4*100/16=25%