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A cylindrical-shaped product(k=0.47 W/m K, p(density)=985 kg/m^3, c_p=3100 J/kg K) 6.5 cm in diameter and 8 cm in height is taken out of the oven when it is at 75 degrees celsius and placed under ambient conditions (10 degrees celsius). Determine the center temperature of the product afer 60 minutes if the convective heat transfer coefficient between the product and mbient air is 25 W/m^2 K.
Lipitor blocks production of chlosterl in the liver. In addition to this reduction of the serum level of cholsterol, HDL acts to remove LDL from the bloodstream. How might this occur?
A piston has an external pressure of 5.00 atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.540 liters.
Determine what ventilation rate (minimum) in m3/hr will be essential to keep the carbon monoxide concentration in his garage from the dangerous level of 1600 ppmv? What is your answer in this case?
Calculate [CO32- ] in a 0.025 M solution of CO2 in water (H2CO3). If all the CO32- in this solution comes from the reaction shown below, what percentage of the H+ ions in the solution is a result of the dissociation of HCO3‾?
A 0.521-g sample of a compound is dissolved in enough water to form 100.0 mL of solution. This solution has an osmotic pressure of 2.45 atm at 25°C. If each molecule of the solute dissociates into two particles (in this solvent), what is the molar..
The osmotic pressure of an aqueous solution at 300 K is 120 kPa. Calculate the freezing point of the solution.
7.5g of ammonia at STP is heated to a temperature of 25C and simultaneously compressed to a volume of 8.0L. Calculate the new pressure of the gas.
For each of the pairs of elements below give the formula for the simplest compound to be formed from them and explain the basis of your decision and note if the bond
Separate samples of an aqueous solution of an unknown ionic salt are treated with dilute aqueous solutions of hydrochloric acid, sulfuric acid, and potassium hydroxide. Precipitates are formed in all three cases.
Calculate the rate at each time interval & average rate for the reaction and determine the rate of each time interval, and then calculate the average rate for the reaction in terms of [H 2 O].
In the electrolysis of water, 2h20 yields 2h2 plus o2, if the volume of oxygen produced was 8ml, what would be the volume of hydrogen produced?
if the freezing point of a .106 m CH3COOH solution is -.284 degrees celsius, calculate the percent of the acid that has undergone ionization.
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