How many moles of S are in a sample of Al2(SO4)3 that contains 6 moles of O

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i

Not a  mixture of two common elements that can be separated by physical means.

Ithink its called the coefficent.