Chemistry, 05.03.2021 18:10 tddreviews
How many grams of zinc (Zn) will be required to produce 2.3 moles of hydrogen gas (H2) by reaction of zinc and hydrochloric acid? Zn + 2 HCl → ZnCl2 + H2
Answers: 3
Chemistry, 22.06.2019 04:00
Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.
Answers: 2
Chemistry, 22.06.2019 10:00
How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?
Answers: 3
Chemistry, 22.06.2019 13:00
Is 9 correct? and can someone me with 10? it’s due tomorrow, you
Answers: 1
How many grams of zinc (Zn) will be required to produce 2.3 moles of hydrogen gas (H2) by reaction o...
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