Question

if the relative atomic mass of oxygen is 64 units, the molecular mass of CO becomes? (ans : 112)

Answer 1

Answer:

The relative atomic mass of carbon monoxide is 112.

Explanation:

The relative atomic mass of oxygen = 64 units

Given the molecular weight of oxygen = 16 u

Given the molecular weight of carbon monoxide = 28 u

The relative atomic mass of carbon monoxide =?

Let the relative atomic mass of carbon monoxide = X

X = 64/16 × 28 = 112

X = 112

Hence, the relative atomic mass of carbon monoxide = 112.

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Answer 2

The relative molecular mass of CO is 112 units.

Given:

The relative atomic a of oxygen is 64 units.

To Find:

The relative molecular mass of CO.

Solution:

To find the relative molecular mass of CO we will follow the following steps:

As we know,

The molecular mass of oxygen is 16 units.

The molecular weight of carbon monoxide is 28 units.

Relative molecular mass is directly proportional to the molecular weight.

So,

$\frac{relative \: molecular \: weight \: of \: oxygen}{relative \: molecular \: weight \: \: of \: carbon \: monoxide }$

$= \frac{ \: molecular \: weight \: of \: oxygen}{ \: molecular \: weight \: \: of \: carbon \: monoxide }$

Now,

Putting values in the above equation we get,

$\frac{ 64}{relative \: molecular \: weight \: of \: carbon \: monoxide} = \frac{16}{28}$

$relative \: molecular \: mass \: of \: carbon \: monoxide$

$= 64 \times \frac{28}{16}$

= 4 × 28 = 112 units.

Henceforth, the relative molecular mass of CO is 112 units.

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