I will give 20 points for correct answer please.
1 answer:
The volume of the glass piece in cubic centimeters is 16.4 cm3
<h3>Volume</h3>
When adding an object to a liquid, the displayed volume difference corresponds to the <em>volume of the added object</em>.
In this way, to find the value of the object's volume, subtract the <u>initial volume </u>from the <u>final volume</u>:
To convert to cubic centimeters, the <em>conversion scale of volume</em> and <em>length </em>measurements need to be used, finding that mL is equal to cubic centimeters. So, the final answer is:
Learn more about units conversion and volume: brainly.com/question/15163977
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Answer:
32.6%
Explanation:
Equation of reaction
2KClO₃ (s) → 2KCl (s) + 3O₂ (g)
Molar mass of 2KClO₃ = 245.2 g/mol ( 122.6 × 2)
Molar volume of Oxygen at s.t.p = 22.4L / mol
since the gas was collected over water,
total pressure = pressure of water vapor + pressure of oxygen gas
0.976 = 0.04184211 atm + pressure of oxygen gas at 30°C
pressure of oxygen = 0.976 - 0.04184211 = 0.9341579 atm = P1
P2 = 1 atm, V1 = 789ml, V2 = unknown, T1 = 303K, T2 = 273k at s.t.p
Using ideal gas equation
=
V2 =
V2 = 664.1052 ml
245.2 yielded 67.2 molar volume of oxygen
0.66411 will yield = = 2.4232 g
percentage of potassium chlorate in the original mixture = = 32.6%