How many magnesium ions are in 2 formula units of Mg3(PO4)2?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

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What volume of a 0.0606 m solution of strontium bromide is needed to obtain 0.340 mol of the compound? question 42 options: a)5.61 l b) 3.4 l c) 600 ml d) 1 l e) 178 ml