Question

In cate grame de H2O PH3 H2CO3 se gasesc 6 grame de hidrogen , va rog si cu rezolvare .

Answer 1

a) M H2O=2+16=18
1 mol H2O=18 g
18g H2O.........2g H
x g H2O..........6g H
=> x=18×6÷2=54 g

b)M PH3= 31+3=34
1 mol PH3=34 g
34g PH3..........3g H
x g PH3............6g H
=> x=34×6÷3=68g

c)M H2CO3=2+12+48= =62
1 mol H2CO3=62g
62g H2CO3.......2gH
x g H2CO3.........6gH
=> x=62×6÷2=186g

Sper că nu am răspuns prea târziu