0.05 mol of oxygen atom.
Explanation:
Mass of potassium hydroxide = 2.79g
Unknown:
Number of moles = ?
Solution:
To solve this problem, find the number of moles of the potassium hydroxide.
Number of moles of KOH =
Molar mass of KOH = 39 + 16 + 1 = 56g/mol
Number of moles of KOH = = 0.05mole
Now,
1 mole of KOH contains 1 mole of oxygen atom
0.05 mole of KOH will have 0.05 mole of oxygen atom.
Learn more:
Number of moles brainly.com/question/1841136
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Answer: it think it would be last one. the mouth to the stomach is the answer.
Explanation:
Hello!
We have the following data:
v (volume) = ? (in L)
n (number of mols) = 1,5 mol
T (temperature) = 22 ºC
First let's convert the temperature on the Kelvin scale, let's see:
TK = TºC + 273,15
TK = 22 + 273,15
TK = 295,15
P (pressure) = 100 kPa → P = 100000 Pa → P ≈ 0,987 atm
R (gas constant) = 0,082 atm.L / mol.K
<span>We apply the data above to the Clapeyron equation (gas equation), let's see:
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I hope this helps. =)