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3 years ago

Which of the following will not increase the rate at which a solute dissolves?

2 answers:

8 0

The answer is B-Cooling the Solvent.

Hope I helped,Ms.Weasley
(Please mark me Brainliest if you think I deserve it! I need 5 more to move up to the next level!)

xeze [42]3 years ago

8 0

Answer: Option (B) is the correct answer.

Explanation:

Cooling the solvent will not increase the rate at which a solute dissolves because when we cool the solvent then the movement of particles decrease.

Therefore, there will be less interaction between the solute and solvent particles as a result the rate of dissolution decreases.

Whereas on crushing the solute the number of solute particles increases. Hence, there will be more interaction between solute and solvent particles and the rate of dissolution increases.

Also, on stirring the solvent there will be more interaction between solute and solvent particles. As a result, the rate of dissolution increases.

Upon heating the solvent, the particles of both solute and solvent get excited which will result in more interaction through the collision. Therefore, the rate of dissolution will increase.

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Explanation:

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3 years ago

a rock weighing 75.0g placed in a graduated cylinder displacing the volume from 31.4 ml to 36.5 ml what is density of the rock i

andrezito [222]

Answer:

ρ≅13.0⋅g⋅mL−1 = 13.0⋅g⋅cm−3

Explanation:

Density=MassPer unit Volume = 75.0⋅g(36.5−31.4)⋅mL =??g⋅mL−1

Note that 1⋅mL = 1⋅cm−3; these are equivalent units of volume;
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7 0

3 years ago

What is the concentration of H+ ions at a pH = 11?

natta225 [31]

Answer:

$\huge 1 × {10}^{-11} \: \: M$

Explanation:

The pH of a solution can be found by using the formula

$pH = - log [ {H}^{+} ]$

Since we are finding the H+ ions we find the antilog of the pH

So we have

$11 = - log({H}^{+}) \\ {H}^{+} = {10}^{ - 11}$

We have the final answer as

$1 × {10}^{-11} \: \: M$

Hope this helps you

6 0

3 years ago

Which isotope is used to treat cancer? (1) C-14 (3) Co-60 (2) U-238 (4) Pb-206

lions [1.4K]

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3 years ago

Given 700 ml of oxygen at 7 ºC and 80.0 cm Hg pressure, what volume does it take at 27 ºC and 50.0 cm Hg pressure?

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Answer:

I think that it might be 2.7

Explanation:

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3 years ago