I don’t use the metric system, so I used feet and then went back.
25 meters is about 82 feet.
So around 82 feet per minute (kinda slow LOL)
82 (feet per minute) x 90 (minutes) = 7380 feet (in 90 minutes)
7380 feet is equal to 2249.424 meters.
(I hope that helped)
Answer:
b. Both the gratings will produce the same separation of peaks.
e. The grating with 10 slits will produce better-defined(narrower) peaks.
Helium has only 2 electrons in it's valence shell
So, option D is your answer.
Hope this helps!
Answer:
I,II, III are true
Explanation:
1. Yes
low pressure reduces the inter molecular attraction force and cause non-ideality
at high temperature frequency of collision is increase that causes loss of energy.
2. yes

T is temperature , more the T more will be the velocity of molecules and hence more kinetic energy.
3. Yes
Polar gases contain stronger inter molecular forces from reliable, measurable partial charges, which implies that they are more permanent, long-lasting, and therefore more prominent forces.
4. No
higher the temperature higher will be the pressure as the frequency of collision will increase and thus increasing the pressure.