Mass of H₂O₂ = 88.778 g
<h3>Further explanation</h3>
The mole itself is the number of particles contained in a substance amounting to 6.02.10²³
Mole can also be determined if the amount of substance mass and its molar mass is known
moles of H₂O₂ = 2.61
So the mass of H₂O₂(MW=34,0147 g/mol) :
<u>Answer:</u> The correct answer is Option B.
<u>Explanation:</u>
To calculate the final pressure of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant volume.
Mathematically,
(at constant volume)
where,
are the initial pressure and temperature of the gas.
are the final pressure and temperature of the gas.
We are given:
Conversion factor: 
Putting values in above equation, we get:
Hence, the correct answer is Option B.
Answer:
- C₃H₈ (g) + 5O₂(g) → 3CO₂ (g) + 4H₂O (l)
(option D. with the proviso that the subscripts of propane's chemical formula must be corrected)
Explanation:
<em>Propane</em> is the saturated hydrocarbon, alkane, with chemical formula C₃H₈ or CH₃CH₂CH₃.
The complete combustion of the hydrocarbons yield carbon dioxide (CO₂) and water (H₂O).
The chemical equation that represents this combustion is:
- C₃H₈ (g) + O₂(g) → CO₂ (g) + H₂O (l) (skeleton equation: unbalanced)
Once you balance it, you get:
- C₃H₈ (g) + 5O₂(g) → 3CO₂ (g) + 4H₂O (l)
Left side Right side
C 3 3
H 8 4×2 = 8
O 5×2 = 10 3×2 + 4 = 10
That equation corresponds to the option D. of the list, with the proviso that the subscripts of propane's chemical formula must be corrected
60+68=128
128/2=64
so the answer is 64
I hope this helped
Subtract the number of protons from the mass number.
