Last week I (0) B heavily. 'O, no, I (2)
wish I (4)
at home.
home after playing tennis when it (1) raining very
soaked before I (3)
home', I thought. 'I
to bring my raincoat'. But unfortunately I (5)
A
B
C
D
0 walk
was walking
walked
have been walking
1
1 had started
was starting
started
start
2 will get
would get
was getting
got
3 reached
reach
will reach
would reach
4 remember
remembered
will remember
had remembered
5 leave
have left
had left
left
El
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
n=3 моль n=3 моль
М = 98 г/моль Vm=22,4 л/моль
m = 294 г V = 67,2 л
9,8 г H2SO4 - Х л Н2
294 г H2SO4 - 67,2 л Н2
V(H2) = 9,8 * 67,2 / 294 = 2,24 л
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
n=3 моль n=3 моль
М = 98 г/моль Vm=22,4 л/моль
m = 294 г V = 67,2 л
9,8 г H2SO4 - Х л Н2
294 г H2SO4 - 67,2 л Н2
V(H2) = 9,8 * 67,2 / 294 = 2,24 л