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A 2.35% solution of an enzyme in water has an osmotic pressure of 7.85 torr. At 20deg C. Assuming the density of the solution is 1.00 grams/mL, what is the molar mass of the enzyme?
which of the solutions included in this experiment could be used to distinguish between the pairs of solutions. In each case, describe the observations you would make and write a net ionic equation for any reaction that would occur.
Determine the new volume of the mixture if the constant is kept constant at 635 mmHg and all the energy released is converted to work to push the piston.
The atmosphere becomes colder at higher elevation. As an average the standard atmospheric absolute temperature can be expressed as Tatm = 288 - 6.5 × 10?3 z, where z is the elevation in meters.
Dry ice (solid ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse is added, and the hole is plugged.
What is the pH at the equivalence point when 100.00 mL of a 0.200 M solution of acetic acid (CH3COOH) is titrated with 0.10 M NaOH to its end point?
Methane diffuses approximately 2.43 times as fast as an unknown gas. Which of the following could be and unknown gas?
Phenol and straight chain alcohol, The compound C6H5OH is a phelol, and C6H13OH is a straight chain alcohol.
What is the change in internal energy (in J) of a system that absorbs 0.588 kJ of heat from its surroundings and has 0.219 kcal of work done on it?
The specific rotation of the pure R-enantiomer of a compund is +80 degrees. What is the composition of R- and S-enantiomers in a mixture
Acetylene gas (C2H2) is produced as a result of the reaction CaC2+2H2O-->C2H2+Ca(OH)2 If 16g of CaC2 are consumed in this reaction, how much H2O is needed? answer in units of mol.
What is the maximum mass of aspirin (the theoretical yield) that could be produced in this reaction?
Consider the following system at 100°C: N2O4(g) ?2NO2(g) Kc = 0.36 Predict the direction in which the system will move to reach equilibrium if we start with 0.20 mole of N2O4
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