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An open-end mercury manometer is connected to a low pressurepipeline that supplies a gas to a laboratory. Because paint wasspilled on the arm connected to the line during a laboratoryrenovation, it is impossible to see the level of the manometerfluid in this arm. During a period when the gas supply is connectedto the line but there is no gas flow, a bourdon guage connected tothe line downstream from the manometer gives a reading of 7.5 psig.The level of mercury in the open arm is 900mm above the lowest partof the manometer.
The excess reagent required 4.30mL back-titration with .00812M Cu2+. Calculate the average weight of Cr on each square centimeter of surface.
a solution of ethanol c2h5oh in water is prepared by dissolving 76.5 ml of ethanol density 0.79 gcm3 in enough water
an empty aerosol can at 25 degree calcius still contains gas at 1.00 atmosphere pressure. if an empty can is thrown into a 475 degree calcius fire, what is the final pressure of the heated can?
You are asked to prepare a standard solution of 10.0 mM of glycine at pH 5.36 for a biochemistry experiment. The pI of glycine is 5.97. What percentage of the glycine in the solution is present as the anion
Rank the following hydrogen atom transitions in order of increasing energy of light produced ( from lowest energy light produced to highest energy light produced).
Can a perpetual motion machine ever be built. Consider the Laws of thermodynamics when responding
What are the major products of reaction of each of the following with (i) propanal and (ii) propanone. (a) LiAlH4 / THF then acidic workup (b) PhMgBr then acidic workup
An experiment shows that a 115 mL gas sample has a mass of 0.170 g at a pressure of 711 mm Hg and a temperature of 33 Celcius. What is the molar mass?
Assume a specific heat of 4.18 J/(g·°C) for the solution, an initial temperature of 25.0°C, and no heat transfer between the cold pack and the environment
A student standardized her I2 solution by preparing a solution of 0.0450 g of ascorbic acid (vitamin C) in a 100 mL volumetric flask. She titrated several 10.00 mL samples of the Vitamin C solution
a cylinder measuring 5.7 cm wide and 6.8 cm high is filled with gas. The piston is pushed down with a steady force measured to be 11 N.
compute the band gap for this semiconductor material after consideing an intrinsic semiconductor with a conductivity
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