1). Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. 2CH3NO2(l)+3/2O2(g)→2CO2(g)+3H2O(g)+N2(g) ΔH∘rxn=−1418kJ How much...

1). Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. 2CH3NO2(l)+3/2O2(g)→2CO2(g)+3H2O(g)+N2(g) ΔH∘rxn=−1418kJ How much heat is produced by the complete reaction of 6.91 kg of nitromethane?

2). The air within a cylinder equipped with a piston absorbs 529 J of heat and expands from an initial volume of 0.10 L to a final volume of 0.87 Against an external pressure of 1.0 atm. What is the change in internal energy of the air within the cylinder?

3). The propane fuel (C3H8) used in gas barbeques burns according to this thermochemical equation. C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)ΔH∘rxn=−2044kJ If a pork roast must absorb 1.7×103 kJ to fully cook, and if only 13 % of the heat produced by the barbeque is actually absorbed by the roast, what mass of CO2 is emitted into the atmosphere during the grilling of the pork roast?

4). How much heat is required to warm 1.40 L of water from 20.0 ∘C to 100.0∘C? (Assume a density of 1.0g/mL for the water.)

Expert Solution

queen_honey_blossom answered 2 years ago

1)For each of the following reactions, calculate ΔH∘rxn, ΔS∘rxn, and ΔG∘rxn at 25 ∘C. 3H2(g)+Fe2O3(s)→2Fe(s)+3H2O(g) N2(g)+3H2(g)→2NH3(g)...

1)For each of the following reactions, calculate ΔH∘rxn, ΔS∘rxn, and ΔG∘rxn at 25 ∘C. 3H2(g)+Fe2O3(s)→2Fe(s)+3H2O(g) N2(g)+3H2(g)→2NH3(g) 2)Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10−2M . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray? 3)A student placed 11.0 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve...

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Consider the following balanced chemical equation: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) a. How many...

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Consider the combustion of acetamide: 4C2H5NO(s)+11O2(g)→8CO2(g)+10H2O(l)+2N2(g) ΔH=−4738kJ A) How much heat is released when 200.0 g of...

Consider the combustion of acetamide: 4C2H5NO(s)+11O2(g)→8CO2(g)+10H2O(l)+2N2(g) ΔH=−4738kJ A) How much heat is released when 200.0 g of carbon dioxide is produced? B) Acetamide has a density of 1.159 g/mL. What volume of acetamide must be combusted to result in the release of 1250 kJ of heat?

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how much heat is needed to convert 10.0 grams of CH3OH(l) at -0.4 C to CH3OH(g)...

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1. At 1 atm, how much energy is required to heat 91.0 g of H2O(s) at...

1. At 1 atm, how much energy is required to heat 91.0 g of H2O(s) at –24.0 °C to H2O(g) at 171.0 °C? 2.When 1518 J of heat energy is added to 48.6 g of hexane, C6H14, the temperature increases by 13.8 °C. Calculate the molar heat capacity of C6H14. 3.A 56.90 g sample of a substance is initially at 21.3 °C. After absorbing 1615 J of heat, the temperature of the substance is 146.8 °C. What is the specific...

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1). Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. 2CH3NO2(l)+3/2O2(g)→2CO2(g)+3H2O(g)+N2(g) ΔH∘rxn=−1418kJ How much...

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