Question

Notice to students: these "free response" questions are answered with a sentence, a calculation, drawing They are graded on a partial.credit scale. Present your answer clearly and show al wa Free response ouestions (60 points total) your work cannot be read by the instructor, it is wrong. 1Balance the following chemical equations: (4 points each) CO:+ НО C:H+ O: K:O+ в K+___B:03 Na:O + Na+ NaNOs N2 CO2+ O2 CHa + Н:0 2. Consider the given reaction, and use all your stoichiometry skills to answer the questin below. Show your math work, round your final answers to 3 significant figures and circe them. Al (s)+Ch ) AICb (s) Assume that 0.40 grams of Al is mixed with 0.60 grams of Ch What is the limiting reactant? (10 points)

Answer 1

Balancing a chemical reaction is to add certain coefficients with reactants and products to make the elements on both sides equale

(a) I QHyt 3 0₂ > 2 Co2+ 2 H₂O (b) G K + 1 B203 → 36,0 + B (C) 10 Na + 2 NaNO3 € Na2O + IN₂ (d) I Chyt 20 → 1 Co₂+ 2H₂O