Answer:
The Less accuracy of this method is the reason for this balance affecting the number of significant digits to which the experimental molecular weight of carbon dioxide can be reported.
Explanation:
As we know the triple-beam-balance method is a less accurate method of measurement of mass.
An accurate molecular weight is not required in this case. So, this method is being used because much accuracy is not required.
That is why this balance affects the number of significant digits to which the experimental molecular weight of carbon dioxide can be reported.