#1: Principal / principle

#2: Council / counsel

#3: Loose / lose

#4: Compliment / complement

#5: Capital / capitol

#6: To / too / two

#7: Bankrupt / bankruptcy, insolvent / insolvency, pregnant / pregnancy

#8: E.g. / i.e.

#9: Imminent / eminent

#10: Allude / elude

via techrepublic