Asample consisting of 2 moles he is expanded isothermally at 0 degrees from 5.0dm3 to 20.0dm3. calculate w, q and deltau for each of the following situations: (i) a reversible expansion of the sample. (ii) an irreversible expansion of the sample against a constant external pressure equal to the final pressure of the gas. (iii) a free expansion (against zero external pressure i. e. in a vacuum) of the sample.
Answers: 2
Chemistry, 22.06.2019 06:00
Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced
Answers: 1
Chemistry, 22.06.2019 23:00
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
Chemistry, 23.06.2019 04:00
If you are told to get 100 ml of stock solution to use to prepare smaller size sample for an experiment, which piece of glassware would you use?
Answers: 3
Chemistry, 23.06.2019 06:20
What is the magnitude of the force of gravity between to 1000 kg cars which are separated by distance of 25. 0 km on an interstate highway? the force between the two cars will be what
Answers: 3
Asample consisting of 2 moles he is expanded isothermally at 0 degrees from 5.0dm3 to 20.0dm3. calcu...
Mathematics, 22.10.2020 23:01
History, 22.10.2020 23:01
Mathematics, 22.10.2020 23:01
Physics, 22.10.2020 23:01
Mathematics, 22.10.2020 23:01
Mathematics, 22.10.2020 23:01
English, 22.10.2020 23:01
Geography, 22.10.2020 23:01