The amount of energy in the bonds of the reactants plus any energy absorbed equals the amount of energy in the bonds of the prod
2 answers:
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<u>Answer:</u>
<u>For Part A:</u> The partial pressure of Helium is 218 mmHg.
<u>For Part B:</u> The mass of helium gas is 0.504 g.
<u>Explanation:</u>
- <u>For Part A:</u>
We are given:
To calculate the partial pressure of helium, we use the formula:
Putting values in above equation, we get:
Hence, the partial pressure of Helium is 218 mmHg.
- <u>For Part B:</u>
To calculate the mass of helium gas, we use the equation given by ideal gas:
PV = nRT
or,
where,
P = Pressure of helium gas = 218 mmHg
V = Volume of the helium gas = 10.2 L
m = Mass of helium gas = ? g
M = Molar mass of helium gas = 4 g/mol
R = Gas constant =
T = Temperature of helium gas = 283 K
Putting values in above equation, we get:
Hence, the mass of helium gas is 0.504 g.
Answer:
51.2g of CO2
Explanation:
The first step is to balance the reaction equation as shown in the solution attached. Without balancing the reaction equation, one can never obtain the correct answer! Then obtain the masses of octane reacted and carbon dioxide produced from the stoichiometric equation. After that, we now compare it with what is given as shown in the image attached.
