Natural abundance of oxygen I think
Answer:
- NH₃ is the limiting reactant.
- Theoretical yield = 120 kg
Explanation:
- 2NH₃ (aq) + CO₂ (aq) → CH₄N₂O (aq) + H₂O (l)
First we <u>convert the given masses of reactants to moles</u>, using their <em>respective molar masses</em>:
- 68.2 kg NH₃ ÷ 17 kg/kmol = 4.01 kmol NH₃
- 105 kg CO₂ ÷ 44 kg/kmol = 2.39 kmol CO₂
2.39 kmol of CO₂ would react completely with (2.39 * 2) 4.78 kmol of NH₃. There are not as many NH₃ kmoles so <u>NH₃ is the limiting reactant.</u>
We <u>calculate how much urea would form with a 100% yield</u>, using the <em>moles of limiting reactant</em>:
- 4.01 kmol NH₃ * = 2.00 kmol CH₄N₂O
We <u>convert that amount to kg</u>:
- 2.00 kmol CH₄N₂O * 60 kg/kmol = 120 kg CH₄N₂O
Finally we <u>calculate the percent yield</u>:
- 87.5 kg / 120 kg * 100% = 72.9 %
Answer:
The pressure contribution from the heavy particles is 17.5 atm
Explanation:
According to Dalton's law of partial pressures, if there is a mixture of gases which do not react chemically together, then the total pressure exerted by the mixture is the sum of the partial pressures of the individual gases that make up the mixture.
In the simulation:
the pressure of the 50 light particles alone was determined to be 5.9 atm, the pressure of the 150 heavy particles alone was measured to be 17.5 atm,
the total pressure of the mixture of 150 heavy and 50 light particles was measured to be 23.4 atm
Total pressure = partial pressure of Heavy particles + partial pressure of light particles
23.4 atm = partial pressure of Heavy particles + 5.9 atm
Partial pressure of Heavy particles = (23.4 - 5.9) atm
Partial pressure of Heavy particles = 17.5 atm
Therefore, the pressure contribution from the heavy particles is 17.5 atm
Answer:
A hot air balloon floats because, the air inside of the balloon is more dense than the air outside the balloon. The air inside the balloon is a hotter temperature and has more kinetic energy as more molecules move faster. And has to be heated enough to carry the amount of passengers and it all depends on mass. The pressure of the outside air is supporting the hot air balloon by force and the fire uses its heat to makes the balloon air increase in temperature therefore making the balloon float up because heat rises. The air inside the balloon expands and has increased volume.