1. A balloon with a fixed amount of air is at room temperature. The balloon is placed in a pan of hot water. • Describe what hap
2 answers:
Answer: The volume occupied by the air inside the balloon and pressure exerted by the air particles on the walls of ballon will get increased.
Explanation:
The temperature of the hot water is higher than the room temperature.
When the balloon with fixed amount of air kept in the hot water. The volume occupied by the air inside the balloon will increase because the temperature of the hot water is more than that of temperature of room temperature.
This is because the volume occupied by the gas is directly proportional to the temperature at constant pressure (Charles law).
The pressure on the balloon from the external source will remain unchanged but the pressure exerted by the air particles on the walls of balloon will get increased as the volume of the balloon is increasing.
The average kinetic energy of the gas molecules will get increased in hot water as kinetic energy of the gas molecule increases with increase in temperature and it is given by:
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Al
Explanation:
The limiting reactant will be Al:
4Al + 3O₂ → 2Al₂O₃
The limiting reactant is the reactant in short supply in a chemical reaction.
Given parameters:
Mass of Al = 30g Molar mass = 27g/mol
Number of moles = =
Number of moles of Al = 1.111 mole
Mass of O₂ = 30g, molar mass = 32g/mol
Number of moles = = 0.94mol
In the reaction:
4 moles of Al reacted with 3 moles of O₂
1.11moles of Al will require = 0.83mole to react
But we have been given 0.94mole of O₂. This is more than required.
Therefore O₂ is in excess and Al is the limiting reactant.
Learn more:
Limiting reagents brainly.com/question/6078553
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Answer:
Explanation:
R = Rydberg constant =
= Principal quantum number of an energy level = 2
= Principal quantum number of an energy level for the atomic electron transition = 4
Wavelength is given by the Rydberg formula
The wavelength of the light emitted is .