Which of the following statements is related to a postulate (assumption) of the kinetic molecular theory of gases?
1 answer:
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Answer : The limiting reagent is
Solution : Given,
Moles of methane = 2.8 moles
Moles of = 5 moles
Now we have to calculate the limiting and excess reagent.
The balanced chemical reaction is,
From the balanced reaction we conclude that
As, 2 mole of react with 1 mole of
So, 5 moles of react with
moles of
From this we conclude that, is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Hence, the limiting reagent is
Answer:
The molecular formula of an ascenapthalene is
Explanation:
where,
=Elevation in boiling point =
Mass of acenapthalene = 0.515 g
Mass of = 15.0 g = 0.015 kg (1 kg = 1000 g)
= boiling point constant = 3.63 °C/m
m = molality
Now put all the given values in this formula, we get
Let the molecule formula of the Acenapthalene be
n = 2.0
The molecular formula of an ascenapthalene is