Explanation:
Expression for the 
speed is as follows.
where, = root mean square speed
k = Boltzmann constant
T = temperature
M = molecular mass
As the molecular weight of oxygen is 0.031 kg/mol and R = 8.314 J/mol K. Hence, we will calculate the value of as follows.
= 
= 498.5 m/s
Hence, for oxygen atom is 498.5 m/s.
For nitrogen atom, the molecular weight is 0.028 kg/mol. Hence, we will calculate its speed as follows.
= 
= 524.5 m/s
Therefore, speed for nitrogen is 524.5 m/s.
The exception to the rule concerning the solubility of chlorides in water is PbCl2.
The solubility rules give us an idea of which substances are soluble in water and what substances are not soluble in water. According to the solubility rules, chlorides are soluble in water.
However, chlorides of lead are not soluble in water hence, the exception to the rule is PbCl2.
Learn more: brainly.com/question/6505878
Answer:
The answer is 3. Arrhenius acids form hydronium ions in water
Explanation:
From the notes my teacher gave me.
Hopefully this helps, have a nice day.
Also by any chance, do you go to Freedom High School?
1. Rubber band: elastic potential energy
2. Spring: elastic potential energy
3. Roller coaster: gravitational potential energy
4. Rabbit: chemical potential energy
5. Hamburger: chemical potential energy
