What mass of znco3 contains 3.11×1022 o atoms

The molecular formula of the compound is , from the molecular formula it is clear that 1 mol of contains 3 mol of oxygen.

Also, in 1 mol there are atoms thus, 3 mol of oxygen will have atoms of oxygen.

Thus, there are atoms of oxygen present in 1 mol of .

1 atom of oxygen will be there in mol.

Number of oxygen atoms given is thus, this will be present in of .

Molar mass of is 125.388 g/mol, thus, mass can be calculated as follows:

Rearranging the above equation,

Putting the values,

Therefore, the mass of  is 2.16 g.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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