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18 Nov 2019
Please answer all 3 questions Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition: 2 H_2 O_2 (l) rightarrow 2 H_2 O (l) + O_2 (g) delta H_rxn = -196.1 kJ Calculate the heat for the decomposition of 402 kg of H_2 O_2. times 10 kJ (Enter your answer in scientific notation.) Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars even day. Although the actual process also requires water, a simplified equation (with rust shown as Fe_2 O_3) is: 4 Fe (s) + 3 O_2 (g) rightarrow 2 Fe_2 O_3 (s) delta H_rxn = -1.65 time 10^3 kJ (a) What is the delta H_rxn when 0.250 kg of iron rusts? (b) How much rust forms when 9.90 times 10^3 kJ of heat is released? Calculate delta H_rxn for 2NOCl (g) rightarrow N_2 (g) + O_2 (g) + Cl_2 (g) given the following set of reactions: 1/2 N_2 (g) + 1/2 O_2 (g) rightarrow NO (g) NO (g) + 1/2 Cl_2 (g) rightarrow NOCl (g) kJ delta H_rxn = 90.3 kJ delta H_rxn = -38.6 kJ
Please answer all 3 questions
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition: 2 H_2 O_2 (l) rightarrow 2 H_2 O (l) + O_2 (g) delta H_rxn = -196.1 kJ Calculate the heat for the decomposition of 402 kg of H_2 O_2. times 10 kJ (Enter your answer in scientific notation.) Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars even day. Although the actual process also requires water, a simplified equation (with rust shown as Fe_2 O_3) is: 4 Fe (s) + 3 O_2 (g) rightarrow 2 Fe_2 O_3 (s) delta H_rxn = -1.65 time 10^3 kJ (a) What is the delta H_rxn when 0.250 kg of iron rusts? (b) How much rust forms when 9.90 times 10^3 kJ of heat is released? Calculate delta H_rxn for 2NOCl (g) rightarrow N_2 (g) + O_2 (g) + Cl_2 (g) given the following set of reactions: 1/2 N_2 (g) + 1/2 O_2 (g) rightarrow NO (g) NO (g) + 1/2 Cl_2 (g) rightarrow NOCl (g) kJ delta H_rxn = 90.3 kJ delta H_rxn = -38.6 kJ
Elin HesselLv2
28 May 2019