Ella makes this table to organize her notes on whether atoms gain or lose energy during the changes of state.
2 answers:
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Answer : The volume of gas formed at STP is 7.86 liters.
Explanation :
The balanced chemical reaction will be:
First we have to calculate the moles of .
Molar mass of Al = 27 g/mole
Now we have to calculate the moles of gas.
From the reaction we conclude that,
As, 2 mole of react to give 3 mole of
So, 0.234 moles of react to give
moles of
Now we have to calculate the volume of gas formed at STP.
As, 1 mole of gas contains 22.4 L volume of
gas
So, 0.351 mole of gas contains
volume of
gas
Therefore, the volume of gas formed at STP is 7.86 liters.