Zalogować się

WAEC - Chemistry (1990 - No. 27)

Which of the following is normally used for drying ammonia gas?

Concentrated tetraoxonitrate (Vl) acid

Calcium oxide

anhydrous calcium chloride

phosphorus (V) oxide

anhydrous copper (ll) tetraoxosulphate (VI)

Uwagi (0)

Reklama