Chemistry, 23.11.2019 02:31 Lawrence101
Gas is trapped inside of a cell with volume 140 m3. the gas exerts 7600 pa of pressure against the walls of the cell. a machine then expands the cell and gives off 490 kj of heat to the gas during the process. if the internal energy changed by 140 kj, what is the final volume of the cell? assume the pressure stays constant.
a. 57 m3
b. 94 m3
c. 660 m3
d. 220 m3
e. 190 m3
Answers: 1
Chemistry, 22.06.2019 14:30
Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false
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Chemistry, 22.06.2019 20:20
The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.
Answers: 1
Chemistry, 23.06.2019 00:20
How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal
Answers: 1
Chemistry, 23.06.2019 03:30
In general metals get as you move from left to right across the periodic table.
Answers: 1
Gas is trapped inside of a cell with volume 140 m3. the gas exerts 7600 pa of pressure against the w...
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