Visualizing ConceptsThese exercises are intended to probe your understanding of key concepts rather than your ability to utilize formulas and perform calculations.Exercises with red numbers have answers in the back of the book.Four of the boxes in the following periodic table are colored. Which of these are metals and which are nonmetals? Which one is an alkaline earth metal? Which one is a noble gas? [Section]
Lecture #20 10/10 REMEMBER: Massof A÷molar mass MolesA×MoleRatioMolesB×Molar Mass Mass B → ↔ → Balance the equation: C 12O22s)11 KClO (l) 312CO (g) + 12H O (g) +8K2l (s) If a gummi bear (sucrose) contains 2.796 grams of sucrose, what mass of KClO is requir3 1mol C H11 22 11 8mol KClO 3 125.55g KClO 3 2.76 gSucrose C(H 11 22 11)× × × =8.008gKClO 3 342.296 gC H 11 22 11 1mol C H11 22 11 1mol KClO 3 Remember there are three steps to answering a stoichiometry question: 1) Convert the mass you are given to mol
