1. <span>2 Cr + 3 H2O = Cr2O3 + 3 H<span>2
2.</span></span><span>Ba + 2 H2O = Ba(OH)2 + H<span>2
3. </span></span><span>SO2 + H2O = H2SO<span>3
4. </span></span><span>Cl2O7 + H2O = 2 HClO<span>4</span></span>
Mr(CH3CH2CH2CH2CH=CH2)=84
.......................................................
Объем надо написать чтоли?
4.8/24=0.2
0.2/1=х/1
х=0.2
0.2*22.4 = 4.48 л