Explanation:
Average electricity consumed per month = 900 kWh
The family cools their house for three months during the summer with two window-unit air conditioners
The power consumed by one window-unit air conditioners = 350 kWh
The power consumed by two window-unit air conditioners = 350(2) = 700 kWh
Power consumed for two air conditioners for the three summer months = 700 (3) = 2100 kWh
Total power consumed for 1 year = 900 (12) = 10800kWh
The percentage of the family’s total annual electricity that is used to run the two air conditioners for the three summer months = = 19.4 %
Answer:
Number of moles nitric acid in the cylinder is 400.539g/mol.
Explanation:
From the given,
Weight of empty gas cylinder = 30.01 g/mol
Number of moles nitric acid = =?
The mass of nitric acid in the cylinder =
Number of moles of nitric acid =
Therefore, number of moles nitric acid in the cylinder is 400.539g/mol.
Answer : The final temperature would be, 791.1 K
Explanation :
According to the Arrhenius equation,
or,
where,
= rate constant at
=
= rate constant at
=
= activation energy for the reaction = 265 kJ/mol = 265000 J/mol
R = gas constant = 8.314 J/mole.K
= initial temperature =
= final temperature = ?
Now put all the given values in this formula, we get:
Therefore, the final temperature would be, 791.1 K