Answer:
[OH⁻] = 1.1 × 10⁻³ M
Explanation:
<em>An aqueous solution at 25°C has a H₃O⁺ concentration of 8.8 × 10⁻¹² M. Calculate the concentration of OH⁻. Be sure your answer has 2 significant digits.</em>
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Step 1: Given data
Concentration of H₃O⁺ ([H₃O⁺]): 8.8 × 10⁻¹² M
Concentration of OH⁻ ([OH⁻]): ?
Step 2: Calculate the concentration of OH⁻
Let's consider the self-ionization of water.
2 H₂O(aq) ⇄ H₃O⁺(aq) + OH⁻(aq)
The equilibrium constant for this reaction is:
Kw = [H₃O⁺] × [OH⁻] = 1.0 × 10⁻¹⁴
[OH⁻] = 1.0 × 10⁻¹⁴ / [H₃O⁺]
[OH⁻] = 1.0 × 10⁻¹⁴ / 8.8 × 10⁻¹²
[OH⁻] = 1.1 × 10⁻³ M
He discovered what became known as Dobereiner's triads. For example he noticed that the average of the atomic mass of lithium and potassium was close to the atomic mass of sodium and they had similar properties.
The third choice is the correct one.
Answer:
The correct name for the N3 ion is azide
Explanation:
Hello friendly person, have a good day!! ;-)
Its a , it would react with lipids to form soap
The correct answers are B. Clouds and D. Storm systems.
Explanation
Convection currents are the result of a physical-chemical process in which chemicals are heated and this decreases their density, causing their elevation. At the same time, the elements in the top sink because of lost temperature and increase in density, creating a cycle. According to the above, the correct answers are B Clouds and D. Storm Systems. Clouds are the result of a cycle of water, in which the water on the earth in a liquid state evaporates due to the caloric energy from the sun, changing to a gas state and go up until becoming droplets again in a process called condensation forming cloud. Once the cloud is very heavy and lost its temperature, it precipitates to the earth due to the force of gravity, and then the cycle starts again. Secondly, storm systems are a kind of cloud, those clouds develop vertically thanks to the convection process, in this, the same process occurs but the clouds have an internal air stream that makes that the clouds grow up vertically producing storms, those clouds are known as Cumulonimbus and Cumulus congestus. So, the correct answers are B. Clouds and D.Storm systems.
