Iron reacts with oxygen to produce iron(iii) oxide as represented above. a 75.0 g sample of fe(s)is mixed with 11.5 l of o2(g) at 2.66 atm and 298 k.(a) calculate the number of moles of each of the following before the reaction occurs.(i) fe(s)(ii) o2(g)(b) identify the limiting reactant when the mixture is heated to produce fe2o3. support youranswer with calculations.(c) calculate the number of moles of fe2o3 produced when the reaction proceeds tocompletion.
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Chemistry, 21.06.2019 21:30
Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)
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Chemistry, 22.06.2019 10:30
Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2
Answers: 1
Chemistry, 22.06.2019 11:00
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
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Iron reacts with oxygen to produce iron(iii) oxide as represented above. a 75.0 g sample of fe(s)is...
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