This is my theory of the answer
Out of the given options, the charge of an electron was not contributed by Neils Bohr.
Answer: Option 2
<u>Explanation:
</u>
The electron's charge was determined by using oil drop experiments performed by Millikan. While Neil Bohr suggested that electrons are rotating in discrete energy levels termed as orbits.
The hydrogen model of Neil Bohr dealt with the quantum energy emission when electron excite from higher energy level to lower energy level. He also stated that there is a relationship between the outer shell and the chemical properties of elements.
So, the second option that is the charge of an electron is not contributed by Bohr as it was contributed by Millikan.
Answer:
The molar amount of gas.
Explanation:
According to the ideal gas law,
PV = nRT
P = pressure of gas
V = volume of gas
n = number of moles of gas
R = ideal gas constant
T= temperature of gas
When pressure, volume and temperature of gas is known the molar amount of gas can be determine by using above formula.
For example:
P = 1.2 atm
R = 0.0821 atm. L.mol⁻¹ .k⁻¹
T = 293 K
V = 2 L
n = ?
Solution:
PV = nRT
1.2 atm × 2L= n × 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K
n = 1.2 atm × 2L / 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K
n = 0.1 mol
