Calculate the mass in grams of urea
Calculate the mass in grams of urea that must be added to 150.g water to give a solution whose vapor pressure is 2.5mm Hg less than that of pure water at 40oC (vp H2O at 40oC=55.34mm Hg)
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The moist air is then passes through the heating unit. In the heating unit the moist air is heated to 24 oC without adding any moisture. Calculate the rate at which water is condensed.
The source at the origin emits four times as much power as the other source. Where on the x axis are the two sounds equal in intensity?
When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 84 dB. What sound intensity level would the crew member experience if he removed the protective earplugs?
Based on historical data, your manager believes that 30% of the company's orders come from first-time customers. A random sample of 109 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample
A 7-m- diameter spherical hot air ballon is neither rising nor falling at some height. The density of atmoshpheric air is 1.3 kg/ m^3 there.
In the linear programming formulation of the shortest route problem, there is one constraint for each node indicating
Heat loss through the walls amounts to approximately 860 kcal/h. If the air is to be maintained at 20°C, what minimum wattage must the heater have? (The specific heat of air is about 0.17 kcal/kg·C°.)
Calculate the concentration of nonelectrolyte solute particlesin human blood if the osmotic pressure is 7.53 atm at37oC, the temperature of the human body.
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