Question

Calculate the mass of 12.044 × 1023 carbon atoms. ?

Answer 1

since 6.022*10 raised to power 23 atoms of carbon weighs 12gm........

so 12.044*10 raised to power 23 atoms of carbon weighs 24gm....

u may also calc. this as.....

1 mole carbon weighs 12gm... and

12.044*10 raised to power 23 contains 2 mole carbon atoms ...

so 24gm is the ans,..

Answer 2

Given:

12.044 × 1023 carbon atoms are present.

To Find:

The mass of 12.044 × 1023 carbon atoms.

Solution:

As we know,

1 mole has

$6.022 \times {10}^{23} atoms$

And,

The mass of 1-mole carbon is 12 grams.

So,

$6.022 \times {10}^{23} atoms = 12 \: gram$

$1atom \: = \frac{12}{ 6.022 \times {10}^{23}} gram$

So,

$mass \: of \: 12.044 × {10}^{23} atoms \: =$

$\frac{12}{ 6.022 \times {10}^{23}} \times 12.044 \: \times {10}^{23} gram$

$= 24 \: gram$

Henceforth, the mass of 12.044 × 1023 carbon atoms is 24 grams.