9 Let’s try some! 3 3 ____ AlBr3 + ____ K ____ KBr + ____ Al Count the atoms:1 Aluminum atom Potassium atom 1 Potassium atom Aluminum atom3 Bromine atoms Bromine atomIs it balanced?No!Add coefficients to balance atoms:1 Aluminum atom Potassium atoms 3 Potassium atoms Aluminum atom3 Bromine atoms Bromine atomsIs it balanced?YES!
10 Let’s try some! ____ FeO + ____ PdF2 ____ FeF2 + ____ PdO Count the atoms:1 Iron Palladium Iron Palladium1 Oxygen 2 Flourine 2 Flourine 1 OxygenIs it balanced?YES!Do we need to add coefficients?NO!
11 Let’s try some! 6 4 ____ P4 + ____ Br2 ____ PBr3 Count the atoms: 4 Phosphorus Bromines Phosphorus3 BrominesIs it balanced?No!Add coefficients to balance atoms:4 Phosphorus Bromines Phosphorus12 BrominesIs it balanced?YES!
12 Let’s try a harder one!233____ CoBr3 + ____ CaSO4 ____ CaBr2 + ____ Co2(SO4)3Count the atoms:1 Co Ca Ca 2 Co3 Br S Br 3 S4 O OIs it balanced?No!Add coefficients to balance atoms:2 Co Ca Ca 2 Co6 Br S Br 3 S12 O OIs it balanced?YES!
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