Answer:
The mass percent of copper as element is the same.
Explanation:
First of all we need the reaction that is presented below:
→
The mass percent of copper (Cu) as element is the same because of during the reaction the element only transform its nature from copper carbonate () to copper oxide (), the latter is a solid and will remain in the system.
On the other hand, you will note that the global percentage mass will be small because of the reaction produce () that is a gas and this one will escape for the system.
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An ambient pressure of 1 atm
It’s lower, hope this helps with your issue and helps solve your problem, no problem
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Answer:
Average atomic mass = 79.9034 amu
Explanation:
The formula for the calculation of the average atomic mass is:
Given that:
<u>For first isotope:
</u>
% = 50.69 %
Mass = 78.9183 amu
<u>For second isotope:
</u>
% = 49.31 %
Mass = 80.9163 amu
Thus,
<u>Average atomic mass = 79.9034 amu</u>