How will the addition of water affect the acidity of a highly acidic solution having pH 2?. A) There will be a slight decrease i
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Answer:- Molar mass of .
Solution:- It is a stoichiometry problem. Mass of the grill is 30.0 kg and the mass after burning the grill is also 30.0 kg. It means all the charcol is burned and the gas is given off.
2.0 kg of charcol are converted to grams which is 2000 g. Since charcol is pure solid carbon, the grams are divided by the atomic mass of carbon which is 12.
The combustion equation of charcol is written as:
From this balanced equation, there is 1:1 mol ratio between charcol and carbon dioxide. So, the moles of carbon dioxide gas formed are equivalent to the moles of charcol. To convert the moles of carbon dioxide to grams we multiply the moles by it's molar mass.
Carbon dioxide has one carbon and two oxygen atoms so it's molar mass = 12 + 2(16) = 12 + 32 = 44
So, 44 is the molar mass of carbon dioxide and above calculations clearly shows how and where we get this.
Answer :
(a) The rate of formed is, 0.066 M/s
(b) The rate of formed is, 0.033 M/s
Explanation : Given,
= 0.066 M/s
The balanced chemical reaction is,
The rate of disappearance of =
The rate of disappearance of =
The rate of formation of =
As we know that,
= 0.066 M/s
(a) Now we have to determine the rate of formed.
The rate of formed is, 0.066 M/s
(b) Now we have to determine the rate of molecular oxygen reacting.
The rate of formed is, 0.033 M/s