Question

explain the preparation of oxygen in the laboratory​

Answer 1

Answer:

Step-by-step explanation:

idk lol sorry bro

Answer 2

$\Large\cal\red{\underline{\overline{\mid{\blue{Answer}}\mid}}}$

To make oxygen in the laboratory, hydrogen peroxide is poured into a conical flask containing some manganese(IV) oxide. The gas produced is collected in an upside-down gas jar filled with water. As the oxygen collects in the top of the gas jar, it pushes the water out.