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Masa CH3OH = 12g +3x1g + 16g +1g=32g
procent węgla
1 atom węgla = 12g
32g - 100%
12g - x
x = 37,5%
procent wodoru
4 atomy wodoru = 4g
32g - 100%
4g - y
y=12,5%
procent tlenu
1 atom = 16g
32g - 100%
16g - z
z = 50%
:)
C=12u
H4=1u*4=4u
O=16u*1=16u
CH4O=12u+4u+16u=32u
C=12/32*100% (12 nad 32) =1200%/32=37,5%
H=4/32*100%=400%/32=12,5%
O=100%-37,5%-12,5%=62,5%-12,5%=50%