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Question- Calculate the molecular weight of a small protein if a 0.32g sample dissolved in 161 ml of water has an osmotic pressure of 9.0 mmHg at 25c. (R=0.0821 L atm/(K mol))
I want you to explain the chemistry in this problem
Draw the liquid-vapor equilibrium plot for the toluene-water system
What is the value of the reaction quotient, Q, for the cell that is constructed from the two half-reactions when the Zn2+ concentration is 0.0100 M and the Ag+ concentration is 1.25 M
Presuming that the drug components of something we are experimenting with dissolves entirely when we stir the tablet with 1:1 ethanol/dichloromethane, Explain what would be solid that's left behind
In a gaseous 2L reaction system, 2.00 mol of methane, CH4(g) is added to 10.00 mol of chlorine, Cl2(g). At equilibrium, the system contains 1.40 mol of chloromethane, CH3Cl(g), as well as some hydrogen chlorine, HCI(g).
The volume of potassium permanganate required to titrate 10 mL of the new hydrogen peroxide (mL):20mL (c) Calculate the concentration of H2O2 from the volume of KMnO4 used and the stoichiometry of the reaction (MW of H2O2 is 34.01).
A beaker containing 250 mL of a 0.500 M solution of acetic acid COOH) is added to 125 mL of a 0.850 M solution of sodium carbonate. The reaction that ensues produces carbon dioxide, sodium acetate COONa), and water. How many grams of carbon dioxid..
A 160.0 L helium tank contains pure helium at a pressure of 1870 psi and a temperature of 298 K. How many 3.5 L helium balloons can be filled from the tank
Which of the following correctly shows intrachain hydrogen bonding (???) in an alpha-helix? A. -NH HN- B. -C=O HC- C. -C=O HN- D. -C=O O=C- E. -CH HC-
An excited hydrogen atom emits light with a frequency of 1.14x10^14 Hz to reach the energy level for which n=4. In what principle quantum level did the electron begin
What is the difference between the equatorial positions and the axial positions on the cyclohexane conformations?
a flask contains 22.5 g of an unknown liquid initially at 14.0oc. after 2.34 kj of heat are added to the liquid its
Identify all of the substances that are used or produced in this experiment A5. Distinguish between elements and compounds.
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