A 35.66g sample of copper is heated using 600j of energy. if the original temperature of the copper is 85C what is its final tem
1 answer:
This problem is providing the mass, energy, initial temperature and specific heat of a sample of copper that is required to calculate the final temperature.
Thus, we recall the general heat equation:
Which has to be solved for the final temperature, as follows:
Finally, we plug in the numbers to obtain:
However, this result is not given in the choices.
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Answer : The mass of carbon monoxide form can be 2.8 grams.
Solution : Given,
Moles of C = 0.100 mole
Mass of = 8.00 g
Molar mass of = 32 g/mole
Molar mass of CO = 28 g/mole
First we have to calculate the moles of .
Now we have to calculate the limiting and excess reagent.
The balanced chemical reaction is,
From the balanced reaction we conclude that
As, 2 mole of react with 1 mole of
So, 0.1 moles of react with
moles of
From this we conclude that, is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Now we have to calculate the moles of
From the reaction, we conclude that
As, 2 mole of react to give 2 mole of
So, 0.1 moles of react to give 0.1 moles of
Now we have to calculate the mass of
Therefore, the mass of carbon monoxide form can be 2.8 grams.