1I am going to come over to pick you up.

2 Minh spends two hours doing his homework everyday.

3 This coat is not warm enough to wear in winter.

1 are going to see

2 introduced

3 doing

4to ride

5will send

6 to do

EX1:

sửa là:2NaOH+H₂SO_4--->Na₂SO₄+2H₂O

sai theo mình không có pư này

sai phải là:2Al+6HCl->2AlCl₃₊3H₂

ta có n_{O2=m:M=1,6:32=0,05(mol)}

TĐBcó n_N2=n_O2=0,05mol

=>m_{N2=n.M=0,05.28=1,4(g)}