Question: Be sure to answer all parts. A mercury mirror forms inside a test tube as a result of the thermal decomposition of mercury(II) oxide: 2

Be sure to answer all parts. A mercury mirror forms inside

Be sure to answer all parts. A mercury mirror forms inside a test tube as a result of the thermal decomposition of mercury(II) oxide: 2 HgO(s) 2 Hg() + O2(g) AHrxn = 181.6 kJ (a) How much heat is needed to decompose 497 g of the oxide? 232.2 kJ (b) If 644 kJ of heat is absorbed, how many grams of Hg form? x 10! g Hg (Enter your answer in scientific notation.)

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