Consider the following reaction: 2Mg(s)+O2(g)â2MgO(s)ÎH=â1204kJ

1. Calculate the amount of heat transferred when 3.54 g of Mg(s) reacts at constant pressure.

2. How many grams of MgO are produced during an enthalpy change of -235 kJ ?

3. How many kilojoules of heat are absorbed when 40.8 g of MgO(s) is decomposed into Mg(s) and O2(g) at constant pressure?

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Related questions

Consider the following reaction:
2Mg(s)+O2(g)?2MgO(s)?H=?1204kJ

How many kilojoules of heat are absorbed when 40.6g of MgO(s) is decomposed into Mg(s) and O2(g) at constant pressure?

Problem 1 - Energy, q, w, Enthalpy, and Stoichiometry Consider the following reaction: 2Mg(s)+O2(g)>>2MgO(s)?H = -1204kJ 1) Is this reaction exothermic or endothermic? 2) Calculate the amount of heat transferred when 2.5 g of Mg(s) reacts at constant pressure. Express your answer using two significant figures. 3)How many grams of MgO are produced during an enthalpy change of -97.0 kJ ? 4)How many kilojoules of heat are absorbed when 7.90 g of MgO(s) is decomposed into Mg(s) and O2(g) at constant pressure?

How would you calculate the amount of heat transferred when 3.55 g of Mg_(s) react at constant pressure? How many grams of MgO is produced during an enthalpy change of -234 kJ? Consider the following reaction: 2Mg_(s) + O_2(g) → 2MgO_(s) ΔH=−1204kJ