How many milliliters of commercial acid need for solution
A chemist wants to prepare 0.50 M HCl. Commercial HCl is 12.4 M. How many milliliters of the commercial acid does the chemist require to make up a 1.5 liter solution of the dilute acid?
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What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 634 and 301 ?
The block W shown in figure below has a mass of 250 kg. Bar AB rests against a smooth vertical wall at end B and is supported at end A with a ball-and-socket joint.
The temperature of a lead fishing weight rises from 15 oC to 45 oC as it absorbs 22.5 kJ of heat. What is the mass of the fishing weight in grams? Heat capacity of lead is 0.128 J/g oC.
An unknown gas sample was dissolved in water at 25°C, producing a solution with a concentration of 4.7 x 10-4 M at 522 mm Hg. What is the Henry's law constant for the unknown gas
How many milliliters of the commercial acid does the chemist require to make up a 1.5 liter solution of the dilute acid?
A mixture of 0.0319 g hydrogen and 0.0178 mol oxygen in a closed container is sparked to initiate a reaction. How many grams of water can form?
A solution is prepared by dissolving 285 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
An equilibrium mixture of O2, SO2, and SO3 contains equal concentration of SO2 and SO3. Calculate the concentration of O2 if Kc =280 for the reaction.
A dense sand has an effective friction angle of 43 and c'=0. A dry, 2.8-inch diameter sample is tested in drained triaxial shear with a confining pressure of 2500 psf. What axial load, P (in pounds), will be required to fail the sample?
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