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Charra [1.4K]
3 years ago
6

A chemist is about to perform a titration by adding a base to an acid. what is the most important reason for using a base instea

d of water to rinse out the burette?
Chemistry
2 answers:
zloy xaker [14]3 years ago
6 0
The answer to this is to prevent dilution of the base, which may affect the results. I think that is right.
Nutka1998 [239]3 years ago
4 0
The answer is D <span>to prevent dilution of the base, which may affect the results
I just finished the test, good luck!</span>
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How many moles of oxygen are produced when 29.2 g of water is decomposed according to H20 H2 + O2​
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8.1moles

Explanation:

Given parameters:

Mass of water to be decomposed = 29.2g

Unknown:

Number of moles of oxygen.

Solution:

To solve this problem, we first write the balanced reaction equation :

               2H₂O    →     2H₂    +    O₂

Now convert the given mass of the water to number of moles;

  Number of moles of water = \frac{mass}{molar mass}

 

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  Number of moles of water = \frac{29.2}{18}  = 16.2moles

   From the balanced reaction equation:

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   16.2 mole of water will produce   \frac{16.2}{2}  = 8.1moles of oxygen gas

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

5 0
3 years ago
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