The average atomic mass recorded on the periodic table for cobalt is 58.933 u. This indicates that the most abundant isotope of
1 answer:
You might be interested in
Answer:
When this equation is solved, the two values of the unknown are 0.0643 and -0.082
Explanation:
Given
--- the actual equation
Required
The values of x
We have:
Cross Multiply
Multiply both sides by 100
Open bracket
Rewrite as:
Using quadratic formula:
Where:
So, we have:
Split
Mass of chlorine = (given)
Molar mass of chlorine =
Now, number of moles is defined as the ratio of given mass in gram to the molar mass of the compound.
Number of moles =
Number of moles of chlorine =
=
Now, according to significant figure rules, the least number of significant figure in the question identifies the number of significant figures in the solution.
Thus, in question, both digit have four significant figures, therefore, the answer must be in four significant figures.
Hence, number of moles of chlorine =