What id the volume if a gas if I have 0.215 moles if gas at a temperature of 75 K and a pressure if 182.34KPa?
1 answer:
This problem tests the concept of general gas equation, which is:
PV = nRT
Where,
P = Pressure
V = Volume
n = number of moles
R = General gas constant
T = Temprature
We are to find V, and we have the rest of the values.
P = 183.24 KPa = 183240 Pa
n = 0.215 moles
T = 75 K
R = 8.314 J /(mol.K)
Using the values in the equation, we get:
V = 0.000732 m³
The value of volume is cubic meter. In cubic cm, the value of volume will be:
V = 0.000732 x 1000000 = 732 cm³
PV = nRT
Where,
P = Pressure
V = Volume
n = number of moles
R = General gas constant
T = Temprature
We are to find V, and we have the rest of the values.
P = 183.24 KPa = 183240 Pa
n = 0.215 moles
T = 75 K
R = 8.314 J /(mol.K)
Using the values in the equation, we get:
V = 0.000732 m³
The value of volume is cubic meter. In cubic cm, the value of volume will be:
V = 0.000732 x 1000000 = 732 cm³
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Answer:
3626.76dm³
Explanation:
Given parameters:
Number of moles of Nitrogen in tank = 17moles
Temperature of the gas = 34°C
Pressure on the gas = 12000Pa
Unkown:
Volume of the tank, V =?
Converting the parameters to workable units:
We take the temperature from °C to Kelvin
K = 273 + °C = 273 + 34 = 307k
Taking the pressure in Pa to atm:
101325Pa = 1atm
12000Pa = 0.118atm
Solution:
To solve this problem, we employ the use of the ideal gas equation. The ideal gas law combines three gas laws which are the Boyle's law, Charles's law and the Avogadro's law.
It is expressed as PV = nRT
The unknown is the Volume and we make it the subject of the formula
V =
Where R is called the gas constant and it is given as 0.082atmdm³mol⁻¹K⁻¹
Therefore V = = 3626.76dm³
Explanation:
According to Bohr's postulates, the electron in the present in the lower energy level can absorb energy and exits to higher energy level. Also, when this electron returns back to its orbit, it emits some energy.
Since the hydrogen consists of 1 electron and 1 proton. The lowest energy configuration of the hydrogen is when n =1 or, when the electron is present in the K-shell or the ground state.
The possible transition for the electron given in the question is :
n = 2, 3 and 4
The schematic diagram of the hydrogen atom consisting of these four quantum levels in which the electron can jump (Absorption) and comeback to from these energy levels (emission) .
