To find what percentage of a compound is a particular element, you must first calculate the relative formula mass (M r) of the compound. Then, use the following equation: ...

Mole calculations To calculate the mass of a higher number of moles, or even calculate the number of moles in a certain mass, a formula triangle can be used.

Body Mass Index, or BMI, is an index used to determine healthy body weight. But, calculating BMI involves a complex formula, and then charts or online calculators are needed to convert the BMI ...

An engineering professor has proven that the effect of mass is important, can be measured and has a significant impact on any calculations and measurements at the sub-micrometer scale.