How much heat is liberated by the combustion of 206 g of hydrogen? #DeltaH_(comb)# = -286 kJ/mol Chemistry Thermochemistry Specific Heat 1 Answer Cameron G. Jul 6, 2016 58900kJ Explanation: #n("H")=m/M=(206g)/(1.00gmol^-1)=206mol# #"Energy Released" = DeltaH_(comb) xx n = -286kJmol^-1xx206mol=58916kJ=58900kJ("3s.f.")# Answer link Related questions How can specific heat be used to identify substances? How can the heat capacity of a lead sinker be determined? How do the specific heats of metals compare with water? How does specific heat change with temperature? Dissolving some potassium bromide in 200cm3 of water leads to a decrease in temperature of 3oC.... Is heat capacity larger for polymers? Why is heat capacity an extensive property? Why does heat capacity change with temperature? What is specific heat measured in? What is heat capacity measured in? See all questions in Specific Heat Impact of this question 10549 views around the world You can reuse this answer Creative Commons License