dùng để tham thảo
Fe2O3+6HCl→2FeCl3+3H2OFe2O3+6HCl→2FeCl3+3H2O
FeCl3+3KOH→3KCl+Fe(OH)3↓FeCl3+3KOH→3KCl+Fe(OH)3↓
2Fe(OH)3to→Fe2O3+3H2O2Fe(OH)3to→Fe2O3+3H2O
Fe2O3+3H2SO4→Fe2(SO4)3+3H2O
onếu hay cho mn 5* và ctlhn. thank, nếu ko cho mn 5* thì mn dỗi
Choose the best answer.
I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.
We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.