Radon-219 decays to radon-218 by releasing... a. a positron b.a muon O c. a neutron O d. an electron O e. a proton
1 answer:
Answer: Option (c) is the correct answer.
Explanation:
A positron is denoted as , a neutron is denoted as
, an electron is denoted as
, and a proton is denoted as
.
Therefore, when will decay into
this means there occurs decrease in its mass number. Hence, it means a neutron will be releasing during this reaction.
The reaction will be as follows.
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Answer : The total mass of oxygen gas released in the reaction will be, 12.8 grams
Explanation :
Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.
This also means that total mass on the reactant side must be equal to the total mass on the product side.
The balanced chemical reaction will be,
According to the law of conservation of mass,
Total mass of reactant side = Total mass of product side
Total mass of = Total mass of
or,
Total mass of = Mass of
+ Mass of
As we are given :
Total mass of = 16.12 grams
The mass of = 9.72 grams
So,
Total mass of = Mass of
+ Mass of
Therefore, the total mass of oxygen gas released in the reaction will be, 12.8 grams