HF+2H2O(пар)=HFO2+2H2 УСЛОВИЕ 300 градусов
Все очень просто :)
n(Zn) = 130/65 = 2 моль
65 это молярная масса цинка (см. в таблице Менделеева)
n(Zn) = n(H₂) = 2 моль
V(H₂) = 2x22,4 = 44,8 л
<span>Essay on the 8th of March.March 8 is a holiday for women, for example mother's or grandmother's! On March 8 you need to congratulate friends of women you mother,grandmother or aunt who you have.The best gift on March 8 candy or flowers in my opinion, the best gift on March 8 mom or aunt this gift with your own hands and nice warm words.For the grandmother or mother will be very pleased.I think that March 8 is good.</span>