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luda_lava [24]
3 years ago
5

Which is the best description of a solution?

Chemistry
2 answers:
Tcecarenko [31]3 years ago
7 0

Answer:

b

Explanation:

<h3>i hope this helps</h3><h3></h3>
hichkok12 [17]3 years ago
6 0

Element: each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e. the number of protons in the nuclei of its atoms, or a part or aspect of something abstract, especially one that is essential or characteristic.

Compound: a thing that is composed of two or more separate elements; a mixture, or made up or consisting of two or more existing parts or elements.

Homogeneous mixture: A mixture where the composition is constant through out. There is a bigger definition if you look up Homogeneous mixture definition

Heterogeneous mixture: A heterogeneous mixture is often composed of different solids, or of matter existing in two or more different phases. Phases are states of matter; there are three well-known phases: gases, liquids, and solids.

Solution, in chemistry, a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. The term solution is commonly applied to the liquid state of matter, but solutions of gases and solids are possible.

Some of these answers are from a online dictionary. Others were Ctrl + C and V from other websites like(sciencetrends.com/heterogeneous-mixture-definition/) and (www.britannica.com/science/solution-chemistry#:~:text=…)

So probably Homogeneous mixture

Srry if it is wrong

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Draw the mechanism for the williamson ether reaction using m-cresol and benzyl bromide (use sodium methoxide as the base).
Nina [5.8K]
Below is the reaction of ether formation.

3 0
4 years ago
Particles of matter are in motion in
inessss [21]

Answer:

liquid and gases

Explanation:

3 0
3 years ago
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Propanoic acid, ch3ch2cooh, has a pka =4.9. draw the structure of the conjugate base of propanoic acid and give the ph above whi
xenn [34]

Conjugate base of Propanoic acid (CH_{3}CH_{2}COOH is propanoate where -COOH group gets converted to -COO^{1-}. The structure of conjugate base of Propanoic acid is shown in the diagram.

The p^{H} above which 90% of the compound will be in this conjugate base form can be determined using Henderson's equation as propanoic acid is weak acid and it can form buffer solution on reaction with strong base.

p^{H}= p^{k_{a}+ log\frac{[Conjugate base]}{[acid]}=4.9+log\frac{90}{10}=5.85

As 90% conjugate base is present, so propanoic acid present 10%.

8 0
4 years ago
Hydrogen sulfide decomposes according to the following reaction, for which Kc = 9.30x10⁻⁸ at 700°C:2H₂S(g) ⇄ 2H₂(g) + S₂(g) If 0
astra-53 [7]

the equilibrium concentration of H₂(g) at 700°C =  0.00193 mol/L

0.00193 mol/L

Given that:

numbers of moles of H₂S = 0.59 moles

Volume = 3.0-L

Equilibrium constant  = 9.30 × 10⁻⁸

The equation for the reaction is given as :

2H₂S    ⇄   2H₂(g)  +  S₂(g)

The initial concentration of H₂S =

The initial concentration of H₂S =

= 0.1966 mol/L

The ICE table is shown be as :

                           2H₂S                ⇄         2H₂(g)        +        S₂(g)

Initial                    0.9166                           0                           0

Change                 -2 x                               +2 x                      + x

Equilibrium          (0.9166 - 2x)                   2x                         x

     

(since 2x < 0.1966 if solved through quadratic equation)

The equilibrium concentration for H₂(g) = 2x

∴

= 0.00193 mol/L

Thus, the equilibrium concentration of H₂(g) at 700°C =  0.00193 mol/L

To know more about equilibrium concentration

brainly.com/question/13414142

#SPJ4

5 0
1 year ago
Explain how scientists use balanced chemical equations and molar mass concepts to represent reactions and account for the amount
konstantin123 [22]

Explanation:

Scientists most especially chemists use the mole concepts through balanced chemical equations and molar masses to represent chemical reactions and account for the amount of substances.

The mole concept entails finding molar relationships between reactants and products in a chemical reaction. Mole connects difference chemical parameters and it is used in quantitative analysis of chemical reaction.

  • First, we work from the known to the unknown.
  • The known is the specie whose mass or number of moles is given.

  Number of moles  = \frac{mass}{molar mass}

  • After obtaining the number of moles, then go ahead to compared using the balanced reaction with that of the unknown.
  • Then from them find the mass of the unknown.  
6 0
3 years ago
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