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Calculate the amount of heat transferred when3.52gof Mg(s) reacts at constantpressure?


How many grams of MgO are produced during an enthalpy change of-231kJ?


How many kilojoules of heat are absorbed when40.2gof MgO(s) is decomposed into Mg(s) and O2(g) at constantpressure?


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Trinidad Tremblay
Trinidad TremblayLv2
28 Sep 2019
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Related questions

Consider the reaction: 2 Mg(s) + O2 (g) ? 2MgO(s) ?H = -1204 kJ (a) Is this reaction exothermic or endothermic?(b) What is the enthalpy change for the reverse reaction? Is the reverse reaction exothermic or endothermic?(c) Calculate the amount of heat transferred when 7.10 g of Mg(s) reacts at constant pressure with excess oxygen.(d) How many grams of MgO are produced during a run of this reaction which experiences an energy change of - 234 kJ?

Consider the following equation: 2CH3OH(g)-->2CH4(g)+O2(g)Delta H= +252.8kJ

A. Calculate the amount of heat transferred when 27.0

gof CH3OH(g)is decomposed by this reaction at constant pressure.
B.Fora given sample of
CH3OH,the enthalpy change during the reaction is 82.5kJ. How many grams of methane gas are produced?
C. How many kilojoules of heat are released when 38.4
gof CH4(g)reacts completely with O2(g)to form CH3OH(g)at constant pressure?

How many grams of MgO are produced during an enthalpy change of -238kJ ?

2Mg(s)+O2(g)?2MgO(s)?H=?1204kJ



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