Question

Name: Chapter 7 Quiz In one experiment you reacted 45.78 of Aluminum with 182.8 g of Iron (III) oxide to produce Aluminum Oxide and Elemental iron (not diatomic). (10 pts each) a) Write and balance the chemical formula, What type of reaction was it? b) Identify the chemical that is being reduced? c) How many mols of Iron(Ill) oxide do you have? d) Which is the limiting reagent? e) How many grams of Aluminum Oxide did you produced? f) What would be your % yield be if you produced 10 g of elemental iron? 8) If you produced 5 grams of aluminum oxide, how many atoms of aluminum are in the 5 grams? h) The reaction required a lot of heat to begin and it did not release any heat? Was the reaction exothermic or endothermic i) If the reaction required a lot of energy what can you infer from the activation energy? What is the molarity of a solution that has 5.024 X 102 atoms of Glucose (C6H1206)? (10 pts) When 11.2 g CaCO3 reacts with 300ml of 37% hydrochloric acid (density: 1.2 g/mL), 4.61 g of CO2 is produced. What is the percent yield of CO2? (the rest f the products is calcium chloride and water) CaCO3(s) + HCl(aq) → CO2(g) + CaCl2 (aq) + H2O(l) (not balanced)

Answer 1

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2A) + Fe₂O - 240 , + A10313 a single replace- It is ouidation - reduction, ment reaction. & Loosing of oxiggen is called redrection so Feroz condergoes reduction, by loosing o Soon Cfed undergoes reduction mass do Iron oxide - 182.89 moles - mass 182.8 loile 3 mol molan mass ① mass of Aluminium & cus.no moles ds Al = mass molar mass us 7 = 1.693 moles. 27 1 mol of feels require 2 mol of al so 1.143 mo as fez Og require 241.143 = 2.286 mol is A! . Al is the limiting reagent.