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3 years ago

Which of the following is an example of a mixture?

Chemistry

2 answers:

kow [346]3 years ago

6 0

Answer:

the answer is b

Explanation:

kap26 [50]3 years ago

3 0

B. the atmosphere is an example of a mixture

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Why is the net charge of a neutral atom zero?

nikitadnepr [17]

Answer:

Explanation:

The positive (protons) and negative (electrons) charges balance each other in a neutral atom, which has a net zero charge. Because protons and neutrons each have a mass of 1, the mass of an atom is equal to the number of protons and neutrons of that atom.

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3 years ago

Show how water can serve as a base by showing the chemical equation of water reacting with hydrochloric acid. g

goldfiish [28.3K]

So, water reacts with hydrochloric acid in the following formula

H2O + HCl —-> H3O+ + Cl-

We can visualize that when the two react, the hydrogen ions is taken on by the water molecule. This satisfies one of the definitions for a base

Bronsted acids = anything that donates a proton (H+ ion)

Bronsted bases = anything that accepts a proton (H+ ion)

So, as we can see, that is exactly what is happening. The Cl- and H+ detach and then the water takes on that extra H+.

H3O+ is what we call a hydronium ion

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3 years ago

Pure water has a pH of 7. Pure water _______.

raketka [301]

Answer:

The concentration of Hydrogen Cation is:

Pure water is<u> NEUTRAL</u>

Explanation:

pH = It is negative logarithm of activity of Hydrogen ions.

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

Activity = concentration for dilute solutions

There are three types of solution based on pH:

1. Acidic solution : Those solution which have pH between 0 to 7 or less than 7 are acidic in nature . They turns blue litmus red.They contain more H+ ions than OH- ions

2. Basic : Those solution which have pH value greater that 7 of between 7 to 14 are basic in nature . They turn red litmus blue.They contain more OH- ions then H+ ions

3 . Neutral : Those solution which have pH = 7 are neutral . They are neither acidic nor basic in nature .They have equa;l concentration of H+ and OH- ions in the solution.

The given water has pH = 7 .This means it is neutral and has low H+ ion concentration in solution. The H+ ion are :

$10^{-7}$ M in water.

OH- =

$10^{-7}$ M in water

So overall neutral

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3 years ago

Why is it important that acids and bases have different properties?

vaieri [72.5K]

Yes, it's important that acids and bases have different properties. Because they'll react differently.

4 0

3 years ago

Which of the following ions is least likely to form colored compounds?

andreyandreev [35.5K]

Answer:

i think d maybe correct me if im wrong

Explanation:

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3 years ago