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faust18 [17]
2 years ago
15

mixtures, solubility, and Acid/Base Solutions lesson outline lesson 2 properties of solutions answer key

Chemistry
1 answer:
salantis [7]2 years ago
8 0

In chemistry, mixtures, solubility, acid/base and solutions are all important to understanding volumetric analysis and chemical reactions.

<h3>What is a mixture?</h3>

A mixture is a any substance which consists of two or more constituents which are physically combined together.

Example of a mixture is bronze.

<h3>What is solubility?</h3>

Solubility of a solute in a given solvent is defined as the amount of solute that can be dissolved in that solvent at a particular temperature.

<h3>What are acids and bases?</h3>

An acid is a substance which produces hydrogen ions or protons as the only positive ions when dissolved in water.

Example of an acid is hydrochloric acid.

A base is a substance which reacts with an acid to produce salt and water only, thereby neutralizing the acid.

Example of a base is potassium hydroxide.

<h3>What are solutions?</h3>

Solutions are homogenous mixtures of a solute dissolved in a solvent.

Example of solutions are sugar solutions and saline water.

Therefore, mixtures, solubility, acid/base and solutions are all important to understanding volumetric analysis and reactions in chemistry.

Learn more about mixtures, solubility, acid/bases and solutions at: brainly.com/question/7314699

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The heat exchange in chemical reactions is due to a change in:
Paha777 [63]

Answer:

B

Explanation:

This would be due to enthalpy. This is because that this where heat exchange happens in chemical reactions.

So, a positive enthalpy means that the reaction is endothermic (heat entering) and if enthalpy is negative this will be a exothermic (heat released)

Another example would be the use of atoms. This example if temperature is the factor, this means that at low temp there is less kinetic energy so low temperature. However, an increase in energy means that there is more kinetic energy in the atoms which means that more collisions occurring.

Hope this helps !!!!

Have a nice day :)

5 0
4 years ago
How many grams of a 22.9% sugar solution contain 68.5 g of sugar?
777dan777 [17]

    The grams  of 22.9 %   sugar  solution that contain 68.5  g  of   sugar  is 299.13 g  of  solution  

   <u><em>calculation</em></u>

 22.9%  means that  there are  22.9 g  of  sugar  in 100 g of solution.

   what about   68.5 g  of sugar

- <em>by cross    multiplication</em>

=[(68.5 g  sugar x 100  g  solution) /22.9  g sugar] =299.13 g  of solution

Nb; <em>g sugar cancel  each other</em>

5 0
3 years ago
Which statement about the surface of the moon is true?
Anna [14]

Answer:

There is no air, wind, liquid water or life on the moons surface.

Explanation:

8 0
3 years ago
What is the boiling point of a solution of 76 g of water dissolved in 500 mL of acetic acid, CH3COOH?
tatuchka [14]

Answer:

127.3° C, (This is not a choice)

Explanation:

This is about the colligative property of boiling point.

ΔT = Kb . m . i

Where:

ΔT = T° boling of solution - T° boiling of pure solvent

Kb = Boiling constant

m = molal (mol/kg)

i = Van't Hoff factor (number of particles dissolved in solution)

Water is not a ionic compound, but we assume that i = 2

H₂O →  H⁺  +  OH⁻

T° boling of solution - 118.1°C =  0.52°C . m . 2

Mass of solvent =  Solvent volume / Solvent density

Mass of solvent = 500 mL / 1.049g/mL → 476.6 g

Mol of water are mass / molar mass

76 g / 18g/m = 4.22 moles

These moles are in 476.6 g

Mol / kg = molal → 4.22 m / 0.4766 kg = 8.85 m

T° boling of solution =  0.52°C . 8.85 m . 2 + 118.1°C =  127.3°C

6 0
3 years ago
Read 2 more answers
Did I get This right I’m confused
Paul [167]
Hey bud !
You were close congrats !
the only problem i saw was the units part at the end.
remember volume is 3 dimensional
length width and height
so it is m^3
3 0
4 years ago
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