Chemistry, 11.04.2020 00:30, lorrainelopez
A sample of helium gas has a pressure of 1.20 atm at 22.0 C. At what Celsius temperature will the helium reach a pressure of 2.00 atm?
A. 492 k
B. 219 c
C. 36.6 c
D. 309 c
Answers: 1
Chemistry, 21.06.2019 17:00, sillslola816oxb5h7
An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid
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How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123
Answers: 1
Chemistry, 22.06.2019 17:30, mwest200316
To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.
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Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.
Answers: 1
A sample of helium gas has a pressure of 1.20 atm at 22.0 C. At what Celsius temperature will the he...
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