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The radius of a chromium atom is 125 pm, please explain how to Calculate the density of solid crystalline chromium in g/cm3.
Starting with pure NaCl and water, describe how you would prepare 25.00 mL of a NaCl solution? Assume you know how much NaCl you need to weigh on the balance.
Changes in atmospheric concentration of carbon dioxide during periods of artificial lighting (non-shaded) and darkness (indicated by grey shading). (b) Changes in oxygen concentration for a stand of soybean plants grown in a biomass chamber
In an experiment a 0.00400 mol/L solution of sodium thiosulfate is prepared. 20 grams of regular salt is placed in one beaker and 20 grams of Iodide salt is placed in another beaker. 3.0 grams is KI was placed into each beaker.
At the State University, tuition is $350 per credit hour. Health insurance is 10% of total tuition fee; Fees are $125.Assume NUM-CREDITS-IN is part of an input record for a given student. Write the COBOL code to calculate WS-TUITION-FEE, WS-HEALT..
a -gt b 2c this is the elementary gas-phase reaction that is carried out isothermally in a flow reactor without any
Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g) + 3H2(g) = 2NH3(g). Delta H(rxn)=-56 kJ.
at some temperaturethe reaction is pcl5g regpcl3gcl2g. if 0.10mol of pcl5 are added to a 1-l flask and 0.020 mol of
What is the molality of a solution in which 25 g of sodium chloride is dissolved in 2.0 kg of water
Write the chemical equilibrium equation and calculate the equilibrium constant for lead(ii) fluoride in a solution that is ph 5.00. the ka for hydrofluoric acid is 6.8x10-4 and the ksp for lead fluoride is 3.2x10-8. What is the concentration of le..
A local radio station can be tuned in by dialing your radio to a frequency of 101.5 MHz. Calculate the energy of the wave.
the first order rate constant for the decomposition of n2o5 to no2 and o2 at 70 degree celsius is 6.82 x 10-3 s-1.
Determine the molar absorptivity of the acidic form of bromocresol green at 445 nm and at 615 nm. Given: Stock soln of bromoscresol green= 80.0 mg/L Molar Mass= 698.0 g/mol ?(445nm)=A445/[BG]
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