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Katarina [22]
3 years ago
14

A solution of ammonia has a pH of 11.8. What is the concentration of OH– ions in the solution?

Chemistry
2 answers:
Basile [38]3 years ago
6 0

Answer:

The answer is 2.20 M

Explanation:

This is because ammonia has a pH of 11.8 and if you take 14-11.8 it equals 2.2 so the answer is 2.20 M

valina [46]3 years ago
5 0

Answer:

2.20

Explanation:

Edge 2020

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Explanation:

I believe this because evolution is meant to help organisms survive

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3 years ago
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The density of aluminum is 2.70 g/cm3. Apiece of aluminum foil that is 1000 cm on each side has a mass of 440. mg. How thick is
MissTica
Mass/volume = density
mass = (440 mg)*(1g)/(1000mg) = 0.440g
volume = (1000cm)(1000cm)(t)
where t = thickness
density = 2.70 g/cm^3 = (0.440g)/((1000cm)(1000cm)(t))

multiply both sides by 't' and divide both sides by (2.70g/cm^3)

t = (0.440) / ((1000cm)(1000cm)(2.70)) = 1.629x10^-7 cm

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8 0
3 years ago
Molecular mass expressed in gram is called<br>​
Elan Coil [88]

Answer:

gram atomic mass

Explanation:

Mass of an atom expressed in grams is known as gram atomic mass. It is equal to the relative atomic mass or atomic weight in grams.

3 0
2 years ago
When light waves pass through solids, the speed of the wave ___________.
bearhunter [10]

Answer:

i think that the answer is that it would decrease

Explanation:

hope this helps

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8 0
2 years ago
Which part of making a solution always releases energy?
emmainna [20.7K]
<span>The part of making a solution that always releases energy is the overall change in forming the solution. The answer is letter D. Although letters A, B and C can be viable answers but, it is not always the case. There are some substances that when you mix or separate them requires more energy or less energy. An example would be w</span>hen the formation (or enthalpy of formation) of carbon dioxide is negative, it means that it releases heat to the surroundings. When it releases heat to the surroundings, the reaction is exothermic. Another example is when you mix baking soda and muriatic acid, the resulting mixture is colder. When it is cold, it means that the reaction is endothermic. So the best answer is letter D.
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3 years ago
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