Chemistry, 10.04.2020 16:48, blaizelange2573
A mixture of hydrogen and xenon gases, in a 5.77 L flask at 84 °C, contains 0.433 grams of hydrogen and 19.4 grams of xenon. The partial pressure of xenon in the flask is atm and the total pressure in the flask is atm.
A mixture of nitrogen and oxygen gases is maintained in a 8.23 L flask at a pressure of 1.46atm and a temperature of 56 °C. If the gas mixture contains 6.54 grams of nitrogen, the number of grams of oxygen in the mixture is g.
The stopcock connecting a 4.26 L bulb containing xenon gas at a pressure of 7.79 atm, and a 4.85 L bulb containing hydrogen gas at a pressure of 4.65 atm, is opened and the gases are allowed to mix. Assuming that the temperature remains constant, the final pressure in the system is atm.
Answers: 3
Chemistry, 21.06.2019 21:00, yousifgorgees101
The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.
Answers: 1
Chemistry, 21.06.2019 23:20, anggar20
Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night. when he took it out, its new volume was 322 milliliters, but its pressure was the same. if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is kelvins.
Answers: 2
Chemistry, 22.06.2019 06:00, tddreviews
Match the name of the following compound: mgso4 · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate
Answers: 1
A mixture of hydrogen and xenon gases, in a 5.77 L flask at 84 °C, contains 0.433 grams of hydrogen...
Social Studies, 07.03.2020 02:25
History, 07.03.2020 02:25