What is the volume of 2.22 moles of helium at 25 degrees Celsius and 766 mm Hg
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Chemistry, 26.03.2020 22:25 adelawilliams60
What is the volume of 2.22 moles of helium at 25 degrees Celsius and 766 mm Hg
Answers: 3
Chemistry, 22.06.2019 04:40, deedee363
*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system
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Chemistry, 22.06.2019 10:10, veronica022
Stage in which a typical star has completely stopped fusion
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Chemistry, 22.06.2019 11:40, Wemaybewrong
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Mathematics, 27.07.2019 21:30
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Mathematics, 27.07.2019 21:30
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History, 27.07.2019 21:30