Answer:
The rate of reaction changes by a factor 6.
Explanation:
Given the reaction is first order.
Let us assume the initial concentration of is
and the initial concentration of
is
.
So, we can write the rate of the reaction as
Where,
is the rate of reaction. And
is the rate constant.
Also, the initial concentration of has been increased by
, and the initial concentration of
was increased by factor
.
So, we have
We can see the rate of reaction changes by a factor 6.
1.905 moles of Helium gas are in the tube. Hence, option A is correct.
<h3>What is an ideal gas equation?</h3>The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
Calculate the moles of the gas using the gas law,
PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.
Given data:
P= 4.972 atm
V= 9.583 L
n=?
R=
T=31.8 +273= 304.8 K
Putting value in the given equation:
=n
n=
Moles = 1.905 moles
1.905 moles of Helium gas are in the tube. Hence, option A is correct.
Learn more about the ideal gas here:
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