Calculate the % yield when you react 20 mg of KBrO3 and produce 5 mg of KBr, assume all other reagents are in excess. Balance the equation, indicate the reactants and the products. (KBrO3 Molecular mass: 166.999 g/mol, KBr Molecular Mass: 119.002 g/mol) KBrO3 + Kl + HBr ➞ KBr + H2Oc. If the reaction produce ΔH= -2456kj. Is the reaction endothermic or exothermic? d. How many atoms of Oxygen are in 20mg of KBrO3?

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Q: How much energy in kJ is released in burning 2.5 mL of gasoline (assuming that all of it is octane…

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