Which of these lines best represents a radioactive element with a half-life of 150 years?
2 answers:
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Answer:
66.57%
Explanation:
The decomposition reaction of calcium carbonate is shown below as:
Calculation of moles of :
Amount = 3.32 g
Molar mass of = 100 g/mol
The formula for the calculation of moles is shown below:
Thus, moles are:
According to reaction,
0.0332 moles of decomposes to yield 0.0332 moles of
Theoretical yield = 0.0332 moles
Calculation of moles of formed as:
Amount = 1.24 g
Molar mass of = 56 g/mol
The formula for the calculation of moles is shown below:
Thus, moles are:
Experimental yield = 0.0221 moles
Thus,
<u>Percent yield = 66.57%</u>
The question is incomplete, the complete question is:
Write the net ionic equation for the below chemical reaction:
(c):
<u>Answer:</u> The net ionic equation is
<u>Explanation:</u>
Net ionic equation is defined as the equations in which spectator ions are not included.
Spectator ions are the ones that are present equally on the reactant and product sides. They do not participate in the reaction.
(c):
The balanced molecular equation is:
The complete ionic equation follows:
As ammonium and chloride ions are present on both sides of the reaction. Thus, they are considered spectator ions.
The net ionic equation follows: