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A 1.42-g sample of a pure compound, with formula M2SO4, was dissolved in water and treated with an excess of aqueous calcium chloride, resulting in the precipitation of all the sulfate ions as calcium sulfate. The precipitate was collected, dried, and found to weigh 1.36 g. Determine the atomic mass of M, and identify M.
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The atmospheric pressure of 100k Pa acts on the other side of the piston. The gas is heated until the volume is doubled and the final pressure is 500 kPa. Calculate the work done by the gas.
The batch fermentation of glucose to glutamic acid using Brevibacterium divaricate is described in detail in US patent 2,978,384. In Example I in the patent a 10.5 wt% glucose feed was fermented for 72 hours at 30 °C
question 1 a using appropriate data sources to be cited correctly make a reasonably accurate sketch or graph of a
A gas mixture containing 55 mol% propane and 45 mol% propylene is to be separated into products containing 10 and 90 mol% propane by adsorption in a continuous, countercurrent adsorption system operating at 25°C and 1 atm. The adsorbent is silica ..
Explain what is meant by the term Threshold Limit Values (TLVs). Describe briefly the different TLVs used by Industrial Hygienists. Outline the strengths and weaknesses of these occupational exposure limits and illustrate how they may best be u..
Estimate the heat-transfer coefficient for steam condensing on the outside, and on the inside, of a 25 mm o.d., 21 mm i.d. vertical tube 3.66 m long. The steam condensate rate is 0.015 kg/s per tube and condensation takes place at 3 bar
Assist with the setting of design variables necessary for sizing equipment
Wet air containing 4.0mole% water vapor is passed through a column of calcium chloride pellets. The pellets adsorb 97.0% of the water and none of the other constituents of the air. The column packing was initially dry and had a mass of 3.40kg, fol..
Important information about Chemicals for Indoor Concrete Flooring Explanations on high solids floor finish chemicals used on indoor concrete flooring
The unit cell for Cr2O3 has hexagonal symmetry with lattice parameters a = 0.4961 nm and c = 1.360 nm. If the density of this material is 5.22 g/cm3, calculate its atomic packing factor.
Finding the Heat of Reaction (Enthalpy) from Heats of Formation, Calculate the heat of reaction at the standard reference state for the following reactions
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