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12u-x%
16u-100%
x=75%C
4u-x%
16u-100%
x=25%H
b)mNH3=14u+3*1u=17u
14u-x%
17u-100%
x=82,35%N
3u-x%
17u-100%
x=17,65%H
c)mP4O10=4*31u+10*16u=284u
124u-x%
284u-100%
x=43,66%P
160u-x%
284u-100%
x=56,34%O
d)mCH3OH=12u+4*1u+16u=32u
12u-x%
32u-100%
x=37,5%C
4u-x%
32u-100%
x=12,5%H
16u-x%
32u-100%
x=50%O
e)mHCOOH=2*1u+12u+2*16u=46u
2u-x%
46u-100%
x=4,35%H
12u-x%
46u-100%
x=26,09%C
32u-x%
46u-100%
x=69,56%O
f)mC3H5(ONO2)3=3*12u+5*1u+9*16u+3*14u=227u
36u-x%
227u-100%
x=15,86%C
5u-x%
227u-100%
x=2,2%H
144u-x%
227u-100%
x=63,44%O
42u-x%
227u-100%
x=18,5%N