4Na + O2 2Na2O

How many grams of Sodium Oxide can be How many grams of Sodium Oxide can be produced from 25g of Sodium?produced from 25g of Sodium?

25 g Na25 g Na 1 mole1 mole 23.0g23.0g

=1.08 mole Na=1.08 mole Na 2Na2Na22O O 4 Na4 Na

=0.54 mole Na=0.54 mole Na22OO 62 g62 g1 mole1 mole

=33.7 g =33.7 g NaNa22OO

2K + 2H2O 2KOH + H2

How many grams of Water are needed to react How many grams of Water are needed to react with 88g of Potassium?with 88g of Potassium?

88 g K88 g K 1 mole1 mole 39.1g39.1g

=2.25 mole K=2.25 mole K 2 H2 H22OO 2 K2 K

=2.25 mole H=2.25 mole H22OO 18 g18 g1 mole1 mole

=40.51 g H=40.51 g H22OO

4Fe + 3O2 2Fe2O3

What mass of Iron (III) Oxide can be formed from What mass of Iron (III) Oxide can be formed from 6.0g of Iron?6.0g of Iron?

6.0g Fe6.0g Fe 1 mole1 mole 55.85g55.85g

=0.107 mole Fe=0.107 mole Fe 2 Fe2 Fe22OO33

4 Fe4 Fe

=0.0535 mole Fe=0.0535 mole Fe22OO33 159.7 g159.7 g1 mole1 mole

=8.54 g Fe=8.54 g Fe22OO33

2Al + 6HCl 2AlCl3 + 3H2

What mass of Hydrogen gas will be produced from What mass of Hydrogen gas will be produced from the RXN of 10g of Aluminum metal?the RXN of 10g of Aluminum metal?

10g Al10g Al 1 mole1 mole26.98g26.98g

=0.370 mole =0.370 mole AlAl

3 H3 H22

2 Al2 Al

=0.55 mole H=0.55 mole H22 2 g__2 g__1 mole1 mole

=1.11g H=1.11g H22

2NaOH + H2SO4 Na2SO4 + 2H2O

What mass of NaOH is needed to react with 50g of What mass of NaOH is needed to react with 50g of HH22SOSO44??

50g H50g H22SOSO441 mole1 mole 98.0g98.0g

=0.51 mole H=0.51 mole H22SOSO44 2 NaOH2 NaOH 1 H1 H22SOSO44

=1.02 mole NaOH=1.02 mole NaOH 40 g40 g1 mole1 mole

=40.80g =40.80g NaOHNaOH