Which list shows the phases of matter in order from the greatest average kinetic energy to the least average kinetic energy per
particle?
A substance has a pH of 8.0. How would it be classified?
Accordingly to the gas laws, which variables are inversely proportional to each other (pressure, volume, temperature)?
part 2
What is the name of this atom?
What is the atomic number?
What is the atomic mass?
What is the charge?
A substance has a pH of 8.0. How would it be classified?
Accordingly to the gas laws, which variables are inversely proportional to each other (pressure, volume, temperature)?
part 2
What is the name of this atom?
What is the atomic number?
What is the atomic mass?
What is the charge?
1 answer:
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Answer:
588.2 mL
Explanation:
- FeSO₄(aq) + 2KOH(aq) → Fe(OH)₂(s) + K₂SO₄(aq)
First we <u>calculate how many Fe⁺² moles reacted</u>, using the given <em>concentration and volume of FeSO₄ solution</em> (the number of FeSO₄ moles is equal to the number of Fe⁺² moles):
- moles = molarity * volume
- 187 mL * 0.692 M = 129.404 mmol Fe⁺²
Then we convert Fe⁺² moles to KOH moles, using the stoichiometric ratios:
- 129.404 mmol Fe⁺² *
= 258.808 mmol KOH
Finally we<u> calculate the required volume of KOH solution</u>, using <em>the given concentration and the calculated moles</em>:
- volume = moles / molarity
- 258.808 mmol KOH / 0.440 M = 588.2 mL