Answer:
How
Explanation: In science a person has to be curious on how things work. Key word how. Why makes sense but how is the better answer. How many is a specific question. But it doesn't involve the whole spectrum of science. What also doesn't make sense.
The answer is (3) The average velocity of the gas molecules increases. In the closed rigid cylinder, the volume of the gas and number of gas molecules will not change. The number of collision will increase.
Answer:
Mass, m = 141.96 kg
Explanation:
Given that,
Moles = 5.07
Molar mass of N₂ = 28 g/mol
We need to find the mass of 5.07 mol N₂.
We know that,
No of moles is equal to mass divided by molar mass i.e.
Where
m is mass of 5.07 mol of N₂
So,
So, the required mass of 5.07 mol N₂ is 141.96 kg.
C. 12222632
You have to follow the Aufbau principle, which states that electrons populate the atomic orbitals situated at the lowest energy first.
The orbitals are:
1
22
333
4444
5555
666
77
