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3 years ago

Explain why raising the temperature of a liquid would speed up diffusion

1 answer:

3 0

Because diffusion<span> is the process when molecules move to lower or higher concentration, so as the molecules move faster they are going to lower or high concentration faster.</span>

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If you mix a 25.0mL sample of a 1.20m potassium sulfide solution with 15.0 mL of a 0.900m basium nitrate solution and the reacti

ddd [48]

Answer:

Limiting reagent: barium nitrate

Theoretical yield: 2.29 g BaS

Percent yield: 87%

Explanation:

The corrected balanced reaction equation is:

K₂S + Ba(NO₃)₂ ⇒ 2KNO₃ + BaS

The amount of potassium sulfide added is:

(25.0 mL)(1.20mol/L) = 30 mmol

The amount of barium nitrate added is:

(15.0mL)(0.900mol/L = 13.5 mmol

Since the reactant react in a 1:1 molar ratio, barium nitrate is the limiting reagent. If all of the limiting reagent reacts, the amount of barium sulfide produced is:

(13.5 mmol Ba(NO₃)₂)(BaS/Ba(NO₃)₂ ) = 13.5 mmol BaS

Converting this amount to grams gives the theoretical yield of BaS (molar mass 169.39 g/mol).

(13.5 mmol)(169.39 g/mol)(1g/1000mg) = 2.29 g BaS

The percent yield is calculated as follows:

(actual yield) / (theoretical yield) x 100%

(2.0 g) / (2.29 g) x 100% = 87%

6 0

3 years ago

Violent shaking from an earthquake can cause soil and rock on slopes to fall and cause a _____.

Mars2501 [29]

The answer is Landslide

5 0

3 years ago

Read 2 more answers

In the game of pool, a player uses a stick called a cue to strike a white ball so

o-na [289]

Answer:

the answer is B: cue - white ball - blue ball.

Explanation:

The energy transfers from the stick to the white ball, then from the white ball to the blue ball. I also took this and it was correct!

7 0

3 years ago

Read 2 more answers

List which observations were qualitative and which were quantitative. Quantitative data is something that can be measured such a

Luba_88 [7]

Answer:

Quantitative= The candle is 3 inches tall and has a diameter of 2 inches.

Qualitative= odor, cold, hot, taste, texture, and appearance

Explanation:

Qualitative:

Qualitative properties are those that can be only observed but not measured in numerical values. These are observed through senses: touch, sight, smell, taste and hear.

For example:

Color, odor, brittleness, taste etc.

Quantitative:

Quantitative properties can be measured in numerical values.

For example:

Melting point, boiling point, conductivity, viscosity, density, hardness and solubility.

In short we can say that qualitative is a measure of quality while the quantitative is a measure of quantity.

8 0

3 years ago

Calculate the pH of a buffer formed by mixing 85 mL of 0.13 M lactic acid with 95 mL of 0.16 M sodium lactate.

ankoles [38]

Lengthy problem. I have attached a paper with the answer.

keep in mind that the way to answer these question depends on the professor's way of teaching it.

let me know if you don't understand

4 0

3 years ago