Work out how many atoms of each element there are in the chemical formula. Add together the A r values for all the atoms of each element present.

Your basal metabolic rate (BMR) reflects the calories you need to live with minimal movement. It can be confused with resting metabolic rate (RMR), which looks at calories with zero movement. You can ...

How do we know the mass of a planet originally appeared on Quora - the knowledge sharing network where compelling questions are answered by people with unique insights. Answer by Geoffrey Widdison on ...