1) How many grams of MgBr2 are in 7.27 x 1022 molecules of magnesium bromide (MgBr2)?
Mg = 24.01 g/mol
Br = 79.90 g/mol
Additional Information:
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Enter your answer in decimal form with 3 sig figs. Use the proper abbreviation for the units.
2) How many grams of chlorine atoms are present in a 3.73 g sample of barium chloride (BaCl2)?
Enter your answer in decimal form with the correct number of sig figs. Use the proper abbreviation for the units.
3) Selenium dichloride, SeCl2, has a molar mass of 149.86 g/mol. What is the mass in grams of 0.555 moles of SeCl2? Use the common abbreviation for the units.