2. Calculating reacting masses What mass of iron could be produced from 80g of iron oxide? Fe 2 O 3 + 3CO  2Fe + 3CO 2 (56x2)+(16x3)  2x56 112+ 48 112 160 80g of iron oxide would make 56g of iron ________ The balanced equation Data RAM Fe 56 O 16 Data for calculating RMM’s Simple proportion- 80 is half of 160 Click mouse Calculate the formula masses of iron oxide and iron 2 Calculator

3. Calculating reacting masses What mass of water could be made by burning 320g of methane? CH 4 + 2O 2  2H 2 O + CO 2 12+(4x1)  2x(2+16) 36 2x18 16 320g of methane would make 720g of water ________ The balanced equation Data RAM C 12 O 16 H 1 Data for calculating RMM’s Simple proportion- Click mouse Calculate the formula masses of methane and water 32  72

4. Calculating reacting masses What mass of ethanol could be made by fermenting 45g of glucose? C 6 H 12 O 6  2C 2 H 5 OH + 2CO 2 (6x12)+12+(6x16)  2((2x12)+5+16+1) 2( 24 72 45g of glucose would make 23g of ethanol ________ The balanced equation Data RAM C 12 O 16 H 1 Data for calculating RMM’s Simple proportion- Click mouse 90  46 96 180( 46 ) 92 Calculate the formula masses of glucose and ethanol