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Wittaler [7]
3 years ago
11

How does the vapor pressure of water at 10 c compare with its vapor pressure at 50 c?

Chemistry
1 answer:
Paha777 [63]3 years ago
4 0
The vapor pressure of water at 50ºC will be greater than that at 10ºC because of the added energy and thus greater movement of the water molecules. If one knows the ∆Hvap at a given temperature, one can calculate the vapor pressure at another temperature. This uses the Clausius-Clapeyron (sp?) equation. It turns out the vapor pressure of water at 10º is 9.2 mm Hg, and that at 50º is 92.5 mm Hg.
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What does ph measure? 6. msg behaves as a buffer. what is a buffer? 7. if we are interested in understanding how msg behaves as
Ket [755]

1. Answer;

- pH of a solution is the measures of molar concentration of hydrogen ions in a solution.

Explanation;

-pH is a measure of how acidic/basic  a substance is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in a substance.

-The pH value states the relative quantity of hydrogen ions (H+) contained in a solution. The greater the concentration of H+ the more acidic the solution and the lower the pH.

2. Answer;

Buffer is a substance that minimizes change in concentrations of H+ and OH- in a solution.

Explanation;

-A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa.

-A buffer can resist pH change upon the addition of an acidic or basic components. It is able to neutralize small amounts of added acid or base, thus maintaining the pH of the solution relatively stable.

3. Answer;

By combining the two substances, we can analyze how the buffers react and stabilize the pH in the solution

Explanation;

- We found out that MSG was a buffer, and since it was a buffer more hydrogen ions is added to the solution. When we added it to the solution, it became a solid, which was what precipitated.

-There were a lot of Hydrogen protons floating around and with the MSG precipitate, we have all of these floating hydrogen and hydroxide ions. These hydrogens and hydroxide ions attach to the MSG, and the extra hydrogens would help to form the precipitate.


6 0
3 years ago
Plz help chemistry test
Nataly [62]

Answer:

plants take carbon dioxide out of the atmosphere and use the energy from sunlight to combine the carbon dioxide and water to form sugar and oxygen

4 0
3 years ago
What acid and alkali would react to make sodium sulphate
ludmilkaskok [199]

The acid  and alkali  that would react  to make sodium  sulfate is

alkali= sodium  hydroxide  

acid = sulphuric acid


<u><em>explanation</em></u>

Acid react  react with alkali  to form salt  and  water.

For  sodium  sulfate salt to be  formed  a sulfate acid  is required to react  with a  hydroxide  of sodium .

 therefore Sodium hydroxide (alkali)  react with sulphuric acid (an acid)  to form sodium sulfate (salt) and water.


6 0
3 years ago
The mass of a diamond that has a volume of 0.35cm3
MAXImum [283]

Answer:

1.225g

Explanation:

From the question given,

Volume of diamond = 0.35cm^3

Density of diamond = 3.5g/cm^3

Mass of diamond =?

Density = Mass /volume

Mass = Density x volume

Mass = 3.5 x 0.35

Mass of diamond = 1.225g

3 0
3 years ago
Needed now can you please help me on this need help on science don't understand
puteri [66]
I think the answer is letter B.
6 0
3 years ago
Read 2 more answers
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