Chemistry, 14.12.2019 04:31 duhitsmiracle59
Asample of the sugar d-ribose (c5h10o5) of mass 0.727 g was placed in a calorimeter and then ignited in the presence of excess oxygen. the temperature rose by 0.910 k. in a separate experiment in the same calorimeter, the combustion of 0.825 g of benzoic acid, for which the internal energy of combustion is −3251 kj mol−1, gave a temperature rise of 1.940 k. calculate the enthalpy of formation of d-ribose.
Answers: 2
Chemistry, 22.06.2019 02:30, BornAdopted21
Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick
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Chemistry, 22.06.2019 23:30, billybob8514
To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.
Answers: 1
Chemistry, 23.06.2019 03:30, tamariarodrigiez
Which of the following describes the entropy change as a solution is made from a liquid and solid
Answers: 1
Asample of the sugar d-ribose (c5h10o5) of mass 0.727 g was placed in a calorimeter and then ignited...
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