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To determine the Ksp value of Hg2I2, a chemist obtained a solid sample of Hg2I2 in which some of the iodine is present as radioactive 131I. The count rate of the Hg2I2 sample is 5x10^11 counts per minute per mole of I. An excess amount of Hg2I2(s) is placed into some water, and the solid is allowed to come to equilibrium with its respective ions. A 150.0-mL sample of the saturated solution is withdrawn and the radioactivity measured at 33 counts per minute. From this information, calculate the Ksp value for Hg2I2(s) double arrow Hg2^(2+)(aq)+2I^-(aq); ksp= [Hg2^(2+)][I^-]^2 21aq2 2I1aq2 Ksp 3Hg2 24 3I42
In the direct steelmaking reactor based on the reduction of an oxidizing foaming slag by char (carbon) particles and droplets of iron containing 2% carbon. Estimate the total surface area of char and iron droplets needed to achieve the smelting ..
A mixture of ethanol and benzene is separated in a network of distillation and membrane separation steps. In one intermediate step, a near-azeotropic liquid mixture of 8,000 kg/h of 23 wt% ethanol in benzene is fed to a pervaporation membrane cons..
Determine the standard heats of Reactions. Discuss the purpose of feeding oxygen to the reactor. Assuming no heat is lost to the surroundings, estimate the temperature of the gas and slag leaving the gasifier.
The recovery of each main component in each product is to be 98%. For example, 98% of the propane in the feed stream is to appear in the propane-rich product, and 98% of the combined pentanes in the feed stream is to appear in the bottoms product ..
Assuming that sucrose is produced by the reaction: 12CO2(g)+11H2O(l) yields C12H22O11(s) 12O2(g); delta H=5640kj calculate the percentage of sunlight used to produce the sucrose- that is, determine the efficiency of photosynthesis.
What are the units commonly used in occupational exposure limits for quantifying the concentration of dust particles, vapours or gases and fibres? What does LD 50 mean in Industrial Toxicology
1. What is the principle of Lime Soda process? Give their functions with chemical reactions. 2. Write notes on Reserve osmosis and Ultra filtration.
mining and metallurgy assignment metallurgyyou need to assess the viability of an ore classification algorithm to be
What is the settling velocity in still air of a particle that is 40 µm in diameter and spherical? The particle has a density of 1400 Kg/m3. Use a density of 1.2 Kg/m3 and a viscosity
In the batch preparation of an aqueous solution, the water is first heated to 80 °C in a jacketed, agitated vessel; 1000 Imp. gal. (4545 kg) is heated from 15 °C.
Select a process variable (pressure / temperature / level / flow) and conduct a literature survey to determine recent developments in process instrumentation field. Identify any one novel instrument and explain in detail the working of the instr..
What is the optimum practical shape for an above-ground dwelling to minimize the heat losses through the building fabric? When is (or was) this optimum shape used? Why is this optimum shape seldom used in richer societies?
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