Answer:
Increasing the pressure on a reaction involving reacting gases increases the rate of reaction. Changing the pressure on a reaction which involves only solids or liquids has no effect on the rate.
Explanation:
Answer:
b
. 0.351 L.
Explanation:
Hello!
In this case, since diluted solutions are prepared by adding an extra amount of diluent to a stock-concentrated solution, we infer that the number of moles of solute remains the same, therefore we can write:
Thus, solving for the volume of the stock solution, V1, we obtain:
Now, by plugging in the given data we obtain:
Therefore, the answer is b
. 0.351 L.
Best regards!
B An enclosed pendulum is not acted on by air resistence or gravity. Plus, pendulum's in clocks are electronic (I think) so that's why it keeps moving back in forth. (at least i think so)
Answer:
C)
Explanation:
(A) Cover the chamber. => <u>It helps to keep the solvent in his gas state</u>
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(B) Gently swirl the solvent in the chamber prior to placing the TLC plate inside => <u>The mechanical energy can promote the conversion from the liquid state to the gas state and help to the saturation process.</u>
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(C) Add ninhydrin (a visualization technique) to the developing solvent =><u>There is no change in the saturation process</u>
(D) Place a paper wick (like a piece of filter paper) inside the chamber=><u>Increases the area for evaporation. The solvent can go up across the paper by capillarity a then can be evaporated increasing the saturation in the chamber.</u>
