Does the half life of oxygen-18 impacts its use ( explain)

0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?

How many grams of phosphorus are contained in 5.09 moles of phosphorus?

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal