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When 28.0 g of acetylene reacts with hydrogen. 24.5 g of ethane is produced. What is the percent yield of
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- Calcium citrate; MM=498.46 g/mol, a common preservative, has a Ksp of 1.12 x 10^-15 at 25°C.arrow_forwardtoluene can be oxidized by the oxygen gas in air, under controlled conditions to make benzoic acid. what is the percent yield of a reaction that converts 1.36 kg of toulene to 1.24 kg of benzoic acid? answer as a percent with 1 decimal place 2 C6H5CH3 + 3 O2 --> 2 C6H5CO2H + 2 H2Oarrow_forwardDuring the combustion of 5.00 gg of octane, C8H18C8H18, 239.5 kcalkcal (1002 kJkJ) is released. what is the balanced equation for the combustion reaction? How much energy (in kJkJ) is released by the combustion of 1.21 molmol of C8H18C8H18 ? How many moles of octane must be burned to release 442.4 kcalkcal ? How many kilocalories are released by the combustion of 18.3 gg of C8H18C8H18 ?arrow_forward
- Using the information in the table below, calculate the heat of released from the following reaction in kJ per g of NO. ( Mw. Of NO = 30.01 g/mol). 4NH3(g) + 5O2 (g) 6H2O(g) + 4 NO(g) NH3 H2O NO Hfº (kJ/mol) - 46.1 -241.8 + 90.3arrow_forwardLiquid menthonal (CH4O) which is used as a cooking fuel, burns with oxygen gas to produce the gases carbon dioxide and water. The reaction produces 363 kJ of heat per mole of methonol. a) write a balanced equation for the reaction includig the heat of the reaction b) is the reaction endothermic or exothermic? c) How many moles of O2 must react with 0.450 mole of CH4O? d) How many grams of CO2 are produced when 78.0 g of Ch4O reacts?arrow_forwardDichloromethane (CH2Cl2)(CH2Cl2), used as a solvent in the decaffeination of coffee beans, is prepared by reaction of methane (CH4)(CH4) with chlorine. How many grams of dichloromethane result from reaction of 2.51 kgkg of methane if the yield is 44.5 %% ?CH4Methane(g)+2Cl2Chlorine(g)→CH2Cl2Dichloromethane(l)+2HCl(g)arrow_forward
- An Iron ore sample contains Fe2O3 together with other substances. Reaction of the ore with CO produces iron metal. __Fe2O3(s)+__CO(g)-->__Fe(s)+__CO2(g) a) balance this equation b) Calculate the grams of CO that can react with .350kg of Fe2O3 c) Calculate the grams of Fe and the grams of CO2 formed when .350kg of Fe2O3 reactsarrow_forwardConsider the gas-phase reaction of ethylene (CH2═CH2) with hydrogen to form ethane (C2H6), which occurs in the presence of a palladium catalyst. How much energy is released when 62.0 g of ethylene reacts? (ΔH = −28 kcal/mol) Please answer in kcal (in significant figures)arrow_forwardA marshmallow is burned in a soda can calorimeter, and heats up 0.255 kg of water by 12.9°C. The calorimeter was calibrated and had a calorimetry constant of 8.50 kcal/kg・°C. Given that carbohydrates contain 4.00 kcal/g, calculate the mass in g of the sugar contained in the marshmallow. Assume that the marshmallow contains no fat or protein.arrow_forward
- What type of reaction and how much energy is involved in a reaction of boron trichloride with hydrochloric acid? B2H6(g) +6Cl2(g) ⟷2BCl3(g) + 6HCl(g) ΔH= -755.4 kJ/mole Group of answer choices Exothermic with ΔH = -755.4 kJ/mole. Exothermic with ΔH = +755.4 kJ/mole. Endothermic with ΔH = -755.4 kJ/mole. Endothermic with ΔH = +0.001324 kJ/mole. Endothermic with ΔH = +755.4 kJ/mole.arrow_forwardwhen a 0.55-g of olive oil is burned in a calorimeter the hear released increases the temperature of 360 g of water from 22.7 c to 36.4 c . what is the energy value for the olive oil in kcal/g?arrow_forwardHow much heat would be given off if 320 grams of product is formed? 2Fe(s) + 3/2O2(g) -> Fe2O3(s) deltaH = -822 kJ/mol (-197 kcal/mol)arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning