Suppose you are calculating the mole ratio of a compound and you had given following moles: 0.679, 1.153, 1.151, and 2.35. So which number you select as least number and why you select?

To determine which number to select as the least number when calculating the mole ratio of a compound, we should assess the precision of the measurements.

In this case, we have four values: 0.679, 1.153, 1.151, and 2.35. The value of 2.35 stands out as significantly larger than the other three values. Therefore, we can conclude that it is an outlier.

Outliers can occur due to experimental error, equipment malfunction, or other factors, and they can greatly affect calculations. As a result, it is advisable to exclude outliers when determining the least number for precise analysis.

In this case, considering 2.35 as the outlier, the remaining three values (0.679, 1.153, and 1.151) can be compared to identify the least number.