Chemistry, 25.06.2019 10:20 katiemaley19
The heat of reaction for a chemical reaction can be calculated by finding the sum of the bond energies of the products and subtracting that from the sum of the bond energies of the reactants: heat of reaction==sum of the energy for the bonds broken β sum of the energy for the bonds formedsum of reactant bond energies β sum of product bond energies when calculating the sum of the bond energies, each bond in the reaction must be accounted for. for example, ch4 is a reagent with a coefficient of 1 in the reaction. there are four cβh bonds in methane and one methane molecule per reaction, for a total of four cβh bonds on the reactant side. all four bonds must be accounted for when finding the sum of the bond energies for the reactants. calculate the heat of reaction using the average bond dissociation energies given in the introduction and your answer to part b for the reaction ch4 + 2o2 β co2 + 2h2o express your answer in kilojoules per mole to three significant figures.
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Chemistry, 22.06.2019 21:00
Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g
Answers: 2
Chemistry, 22.06.2019 21:20
Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)βcocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 βc . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction
Answers: 2
Chemistry, 23.06.2019 02:30
What role does weathering have in shaping earthβs surface? a) it allows sediments to fall out of a medium. b) it sediments settle on a new surface. c) it breaks down older material into sediments. d) it transports sediments to a different location. will give brainliest, answer quickly.
Answers: 2
Chemistry, 23.06.2019 06:40
8. how much enthalpy/heat is transferred when 0.5113gof ammonia (nh3) reacts with excess oxygen according| to the following equation: 4nh3 +502 - 4n0+ 6h20ah = -905.4j
Answers: 1
The heat of reaction for a chemical reaction can be calculated by finding the sum of the bond energi...
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