Question

calculate the number of moles moleculaes of Nh3 gas in a volume 67.2dm cube of it measured of STP​

Answer 1

Answer:

As ,

We know that,

$1dm {}^{3} = 1l$

So,

$67.2dm ^{3} = 67.2l$

As,

To calculate moles of any gas at STP from the given volume of gas ,

we have to divide the given volume of gas by 22.4L (normal volume at STP).

So,

$n = \dfrac{67.2}{22.4} \\ \implies \bold{\blue{\boxed{\boxed{n = 3}}}}$

So,

Number of moles of 67.2 decimeter cube of any gas at STP are 3.

Answer 2

Answer:

Answer:

As ,

We know that,

1dm {}^{3} = 1l1dm

3

=1l

So,

67.2dm ^{3} = 67.2l67.2dm

3

=67.2l

As,

To calculate moles of any gas at STP from the given volume of gas ,

we have to divide the given volume of gas by 22.4L (normal volume at STP).

So,

\begin{gathered}n = \dfrac{67.2}{22.4} \\ \implies \bold{\blue{\boxed{\boxed{n = 3}}}}\end{gathered}

n=

22.4

67.2

⟹

n=3

So,

Number of moles of 67.2 decimeter cube of any gas at STP are 3.