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What is the advantage of reading the absorbance rather than the percent transmittance on the spectrophotometer?
A series RL circuit has a resistance of 50 Ohms and an inductance of 140 mH and is driven by a 120-V, 60-Hz source.
If the density of ethyl alcohol is 0.789 g/ml, how many quarts can be produced by the fermentation of 100.0 lbof sugar?
With respect to the z axis, find the magnitude of the net torque applied to the rod.
The vapor pressure of ethyl ether is 7.87 in. Hg at 2°C; 11.8 in. Hg at 12°C; 27.5 in. Hg at 32°C; 29.9 in. Hg at 35°C; 39.3 in. Hg at 42°C. What is the normal boiling point of ethyl ether
total ion concentration what conductivity should be observed for 0.050 M Na2SO4?
calculate molar solubility of strontium ion when solid sr(OH)2 is in equilibrium in aqueous sol. ksp=1e-7
methane and hydrogen sulfide form when 36g H2 reacts with carbon disufide. Calculate the percent yield if the actual yield of CH4 is 69.8
Consider the combustion of H2(g): 2 H2(g) + O2(g) →2 H2O(g). If hydrogen is burning at the rate of 0.48 mol/s, what is the rate of consumption of oxygen? What is the rate of formation of water vapor?
What is the maximum age of a sample that can be measured by 14C dating if the error of measurement is 0.5%? [NOTE: You may assumed that the half-life is 5700 years].
A 0.265 mg sample of an enzyme dissolved in 1.00 ml of an aqueous solution at 37°C has an osmotic pressure of 2.26 × 10-3 atm. What is the molar mass of the enzyme?
What is the molarity of the new solution. If the temperature of a sample of water requires 3.2 KJ of heat to raise the temperature from 26.1 C to 36.2 C, how much water was in the sample
The molar heat of vaporization of carbon disulfide, CS2, is 28.4 kJ mol-1 at its boiling point. How many kilojoules of heat would be liberated by the condensation of 9.75 g of carbon disulfide?
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