Explanation:
According to collision theory, more is the number of collisions between solute and solvent particles more will be the rate of reaction.
- Refrigerate food to keep it from spoiling - Here particles will collide with less force as decrease in temperature will cause an increase in potential energy of particles.
- Add inert water to a reaction solution - Here also particles will collide less frequently.
- Compress the air/fuel mixture inside an engine cylinder with a piston - Here particles will collide more frequently as increasing the pressure will bring the molecules close to each other and thus there will be more number of collisions.
- Raise the boiling point of water with a pressure cooker - Increase in temperature will also cause increase in number of collisions.
- Grind a metal into a fine powder - More surface area will also provide more number of collisions.
Answer:
the warm air rises and cool air sinks
Explanation:
The surface heated air expands as it warms, becomes less dense than surrounding cooler air and rises as buoyant and turbulent bubbles. This is convection and is the main process by which the troposphere mixes and heats. Although convection stirs and mixes the troposphere, the higher it is the colder it becomes.
Answer is: <span>C.)It will be closer to the mass of Vi–193.
</span><span>Average atomic mass of vitellium =
Ar(Vi-188) </span>· ω(Vi-188) + Ar(Vi-191) · ω(Vi-191) + Ar(Vu-193) · ω(Vi-193).
Average atomic mass of vitellium =
187.9122 amu · 0,10861 + 190.9047 amu · 0,12428 + 192.8938 amu · 0,76711.
Average atomic mass of vitellium = 20,409 + 23,725 + 147,970.
Average atomic mass of vitellium = 192,104.
The molarity of Barium Hydroxide is 0.289 M.
<u>Explanation:</u>
We have to write the balanced equation as,
Ba(OH)₂ + 2 HNO₃ → Ba(NO₃)₂ + 2 H₂O
We need 2 moles of nitric acid to react with a mole of Barium hydroxide, so we can write the law of volumetric analysis as,
V1M1 = 2 V2M2
Here V1 and M1 are the volume and molarity of nitric acid
V2 and M2 are the volume and molarity of Barium hydroxide.
So the molarity of Ba(OH)₂, can be found as,
= 0.289 M
