Describe the ways you can know that a chemical reaction has occurred.
2 answers:
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Answer:
C) 4.24 x
Explanation:
E = Δm
Δm = 0.0284 x 1.66 x kg = 4.714x
kg
putting value in above equation
E = 4.714xkg x (3x
= 4.24 x
Since water is already at 100<span>°C all the energy is used to evaporate it.
Now we can calculate how many </span>mols of water are evaporated with 820kJ.
We calculated that we got 20 mols of water evaporated. Now, all we have to do is find how many grams is a mol of water. Molar mass of water is <span>20.16 g/mol.
</span>The final answer is:
Now we can calculate how many </span>mols of water are evaporated with 820kJ.
We calculated that we got 20 mols of water evaporated. Now, all we have to do is find how many grams is a mol of water. Molar mass of water is <span>20.16 g/mol.
</span>The final answer is: