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The osmotic pressure of a liquid at 320 K is 145 kPa. Compute the freezing point of the solution. Explain how to solve without knowing what the substance is or being given values for the freezing point constant (kf), density or molar mass.
Determine the lime (CaO) and soda ash (Na2CO3) dose, mg/L as CaCO3, to soften the following water to a final hardness of 90.0 mg/L as CaCO3. Assume the lime is 90% pure and the soda ash is 97% pure.
Neither serine nor leucine are eluted from the column because the pH of the elution buffer is too high. D. Leucine will elute first, followed by serine. E. Serine will elute first, followed by leucine.
A fire truck attaches two fire hoses to a hydrant to fight a fire. Each hose has a diameter of 20 cm. The underground water pipe going to the hydrant has a diameter of 100 cm. In the underground pipe
solid lithium hydroxide reacts with gaseous carbon dioxide to form solid lithium carbonate and liquid water. what mass
The mass spectrum of 1-ethyl-1-methylcyclohexane shows many fragments, with two in very large abundance. One appears at m/z = 111 and the other appears at m/z = 97.
Describe in brief the risk connected with solutions of 1M NH 3 , 1M HCl, and 1M NaOH?
The initial temperature of the water was 25.4 C and the final temperature of both the water and metal was 36.6 C. If the specific heat "c"
how many milliliters of o2 are consumed in the complete combustion of a sample of hexane c6h14 if the reaction produces
Compute the osmotic pressure in torr of a solution containing 18.75 mg of hemoglobin in 15.0 mL of solution at 25.0oC. IF the molar mass of hemoglobin is 6.5 x 104 g/mol.
The acid dissociation for a weak acid Hx at 25c is 1.6x10^-8. Calculate the free energy information for x-(aq) at 25c. The standard free energy of Ax(aq)
The speed of sound in air is 344 m/s at room temperature. The lowest frequency of a large organ pipe is 30 s-1 and the highest frequency of a piccolo is 1.5 x 104 s-1. Find the difference in wavelength between these two sounds.
Choose two functional groups and for each group find a household product that contains the group. Then explain the action of the product in terms of the intermolecular forces that these groups impart to the molecule.
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