How many moles are contained in each of the following? Be sure each of your answer entries has the correct number of significant figures.

Question

Part 1 of 2

55.0 g of magnesium bromide (MgBr2)

55.0 g MgBr2 =

X

Part 2 of 2

14.0 g of ethylene (C2H4)

14.0 g C2H4 =

mol C2H4

Answer 1

Part 1 of 2:

1.762 moles of magnesium bromide (MgBr2)

Part 2 of 2:

0.219 moles of ethylene (C2H4)