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When one mole of solid NaOH is dissolved in 1L of solution, 44.5kj of heat are released. How much heat is released when 1.00g of NaOH is dissovled in 100.0mL of water?
Draw the structure of the product of each of these organic reactions: Reaction of Methanol and aqueous Potassium permanganate.
Two long, parallel wires separated by 3.50 cm carry currents in opposite directions. The current in one wire is 1.60 A, and the current in the other is 3.45 A. Is the force attractive or repulsive?
How many grams of water can be cooled from 43'C to 22'C by the evaporation of 60 g of water? The heat of vaporization of water in this temperature range is 2.4 kJ/g.
Are the methyl groups enantiotopic or diastereotopic in the ketone? How about the alcohol?
An ice skater with mass of 50 kg pushes off from the wall of an ice rink. She begins at rest, and after letting go of the wall she is moving away from the wall with a speed of 3 m/s. Assume that th
Consider the location of the amino acid side chains and types of repeating interactions in both an alpha helices and beta sheet. Explain why some amino acids are found more often in one structure t
Denaturation of a protein takes place over a small range of temperature as shown by the heat denaturation curve of ribonuclease A shown in your textbook on p.107. Explain what this tells you about
An airplane starting from rest takes 25s and 500m of runway at constant acceleration to leave the ground. What is its velocity when it becomes airborne?
Determine the osmotic pressure of an aqueous solution containing 250 g of glucose (C6H12O6) in a total volume of 1.0 L solution at 0.0 C.
White light containing wavelengths from 400 nm to 750 nm falls on a grating with 6000 lines/cm. How wide is the first-order spectrum on a screen 2.70 m away?
If 50.0ml of a solution containing 0.01370g of the stretomycin has an osmotic pressure of 8.72mmHg at 23.6 degrees C, what is the molecular weight of the antibiotic?
If the cable lifts upward on it with a force of 10900 N, what is the resultant force acting on the elevator?
Calculate the number of grams of urea that must be added to 150 g water to give solution whose vapor pressure is 2.5 mmHg less than that of pure water at 40 degrees C.
Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48 g/cm3 A fitting composed of common brass has a total volume of 113.0cm3. How many atoms of zinc doe
Calculate the surface area. if the sphere is broken Into eight spheres, each having a volume of 1.25 centimeter cubed, what is the total surface area of the spheres?
A circular loop of conducting wire measuring 12cm in diameter is placed into a .60-T magnetic field. What is the magnetic flux through the loop:
A 4.15g piece of calcium is dropped into 250.0ml of 0.600 M HCl. What is the concentration of magnesium chloride? What is the mass of hydrogen present?
Calculate the molality H3PO4 in the solution and Water is the solvent and the molarity of H3PO4 in the solution and the number of ml of the 85% H3PO4 that is required to make 800 ml of 2.00 M H3PO
Each tire on a car has a radius of 0.330 m and is rotating with an angular speed of 15.5 revolutions/s. Find the linear speed v of the car, assuming that the tires are not slipping against the groun
What is the concentration of 0.44% Ba(OH)2 in terms of normality? How many milliliters of 22% w/v Na2SO4 would be required to prepare 500ml of a 0.5 N Na2SO4 solution?
Calculate the mole fraction of benzene in a solution of benzene and toluene that has a total vapor pressure of 266mmHg at 60 degrees C.
Toluene, C6H5CH3, is a liquid used in the manufacture of TNT. Its normal boiling point is 111.0oC and its molar heat of vaporization is 35.9 kJ/mol. What would be the vapor pressure (in torr) of tol
The diameter of a neutral helium atom is about 1.0 102 pm. Suppose that we could line up helium atoms side by side in contact with one another. Approximately how many helium atoms would it take to
What will be the final temperature. The specific heats of ice and water are 2.09 and 4.184 J/g.°C, respectively. The heat of fusion for water is 334 J/g.