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A 2.50-g sample of a large biomolecule was dissolved in 13.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is 5.03°C · kg/mol, and the boiling point of pure carbon tetrachloride is 76.50°C.
A dam project specifies 97% compaction. Lab tests on the soil being used indicate that it has a maximum dry density of 1900 kg/m 3 at an optimum water content of 13.2%.
A small chunk of the original sample had a wet weight of 140.9 grams and weighed 85.2 grams after drying. Compute the water content, using the correct number of significant figures.
The brush is immersed in the first volume and agitated until equilibrium is established, removed and the exercise is repeated with the second volume. Assume that the solvent remaining in the brush after it is removed from the first batch is insign..
The hull of a boat has a volme of 150m and the total mass of the boat when empty is 8560kg. determine how much load this boat can carry without sinking in a lake.
Estimate the effective friction angle for the sand (assume c' = 0). Calculate the sand's shear strength (τf) on a horizontal plane at depths of the 20 ft and 50 ft.
What would be the Horizontal and vertical component from this acting force see diagram
You fill a 2-cubic foot wheelbarrow to the top with aggregate. if the specific gravity of the aggregate is 2.548 and 18% of the aggregate is void spaces, how much does the aggregate in the wheelbarrow weight?
Water flows steadily through a horizontal nozzle. The nozzle inlet diameter is 6 in. At the nozzle outlet, where the pressure is atmospheric, the diameter is 2 in. Determine the pressure head at the nozzle inlet to produce a water jet velocity of ..
A big municipal utility district is considering two large-scale conduits. The first includes construction of a steel pipeline at a cost of $200 million.
a) The maximum flow rate that can be achieved without cavitation occurring in the piping system. b) The maximum elevation of the highest point of the piping system to avoid cavitation.
What is the velocity head expressed in atmospheres for a rapid filter operated at a surface loading rate of 475 m/d when the local porosity is 0.40?
Two passenger cars are traveling at 65 MPH on a highway moving in the same direction in the same lane. The cars are separated by 25 feet for every 10 MPH of their speed. The coefficient of friction (skidding resistance) between the tires and the r..
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