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Two flasks (which we will refer to as flask 1 and flask 2) are connected to each other by a U-shaped tube filled with an oil having a density of 0.706 g mL-1. The oil level in the arm connected to flask 2 is 14.17 cm higher than in the arm connected to flask 1. Flask 1 is also connected to an open-end mercury manometer. The mercury level in the arm open to the atmosphere is 18.48 cm higher than the level in the arm connected to flask 1. The atmospheric pressure is 0.901 atm. What is the pressure of the gas in flask 2 expressed in torr?
Carbon-11 radioactively decays by positron emission with a half-life of 20.4 minutes. If a dosage of carbon-11 is administered to a patient for a PET scan, what percentage of carbon-11 will remain in the patient's system after 61.2 min
How many grams of CO2 were used during the month? molar mass of CO2 is 44.00995 g/mol.
Use this equation Keq= [FeSCN^2+]/[Fe^3+][SCN^-] to calculate the concentration of Fe^3+ and SCN^- in a solution that has an equilibrium FeSCN^2+ concentration of 4.5 x10^-5 M.
If the enthalpy change for the reaction is 21 kJ/mol, what is the minimum value of the change in entropy for the reaction. Please answer in J/K* mol
At 25 degrees C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.1 kJ per gram of carbon monoxide consumed. What is the value of ^H for the balanced reaction?
A mixture of gases with a pressure of 800.0 mm Hg contains 60% nitrogen and 40% oxygen by volume. What is the partial pressure of oxygen in this mixture?
At the equivalence point all carbonate has been converted to bicarbonate NEt ionic equation before the equivalence point: Net ionic equation at the equivalence point
A metal, M, was converted to the chloride, MCl2. Then a solution of the chloride was treated with silver nitrate to give silver chloride crystals, which were filtered from the solution.
The solubility of the ionic compound M2X3, having a molar mass of 238 g/mol, is 2.89 10-7 g/L. Calculate the Ksp of the compound
Calculate the mass of glucose metabolized by a 54.8 person in climbing a mountain with an elevation gain of 1730
What is the pH of the solution created by combining 8.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid?
When runners or other athletes practice at high altitudes pressure is reduced. What then will be the effect on the [O2] in their blood? Why does this produce a lightheaded feeling?
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