Question

10ml of h2 contain2*10^3 molecules of hydrogen at certain temp and pressure calculate number of molecules in 200 ml of oxygen

Answer 1

Answer:

4×10Δ

4

Explanation:

Answer 2

Given:

At certain temperature and pressure, 10 ml of H₂ contains 2 × 10³ molecules of Hydrogen

To find:

The number of molecules in 200 ml of oxygen

Solution:

We know,

$\boxed{\bold{\underline{AVOGADRO'S\:LAW\: }}}:$ According to this law, the gases with equal volumes, at the same temperature and pressure, will have equal no. of molecules.

Let "T" & "P" represent the temperature and pressure respectively.

So based on the above law we can say that,

If 10 ml of H₂ contains 2 × 10³ molecules of Hydrogen at T & P

Then 10 ml of O₂ will also contain = 2 × 10³ molecules of Oxygen at the same T & P

Therefore, at T & P,

200 ml of Oxygen will contain,

= $\frac{2\:\times\:10^3}{10} \times 200$

= $200 \times 200$

= $40,000$

= $\bold{4\times 10^4\:molecules}$

Thus, the number of molecules in 200 ml of oxygen is $\underline{\underline{4\times 10^4\:molecules}}.$

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