Question

the given diagram shows a barometer if the atmospheric pressure 76 mmhg then what is the value of h

Answer 1

apply the formula of pressure. 13600*10*0.76

Answer 2

Answer:

27.76142 x 10²¹ molecules

Explanation:

We know,

1 mole of O2 = 6.022 x 10²³ molecules

4.61 x 10^-2 moles of O2 = (6.022 x 10²³) x (4.61 x 10^-2)

Solving R.H.S

=> (6.022 x 4.61) x 10^23-2 (using exponential laws, x^a . x^b = x^a+b)

=> 27.76142 x 10²¹ molecules

Hence we conclude that 4.61 x 10^-2 moles of O2 consists of 27.76142 molecules.

Thanks