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Creatinine, C4H7N3O, is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly reliable indicator of kidney function. The normal level of creatinine in blood for adults is approximately 1.0 mg per deciliter (dL) of blood. If the density of blood is 1.025 g/mL, calculate the molality of a normal creatinine level in a 12.3 mL blood sample.What is the osmotic pressure of this solution at 25.0°C?
A hypothetical salt AxBy crystallizes in the cubic syatem. The unit cell mass has atoms of A at each corner plus on at (1/2,1/2,/1/2) and atoms of B at positions (0,1/2,1/2).
Calculate the work done (in J) on the surrounding atmosphere (1atm pressure, 25.8 oC ) by the evolution of hydrogen in the subsequent reaction
A general chemistry student found a chunk of metal in the basement of a friend's house. To figure out what it was, he used the ideas just developed in class about density.
The expresssion for the freezing point depression of a solution relative to that of the pure solute is shown above. From solutions of known concentrations of p-dichlorobenzene in cyclohexane, you determine Kf, the freezing point depression constan..
the solubility of a salt in water represents the amount of solute necessary to reach a state of equilibrium between saturated solution and undissolved
A certain constant-pressure reaction is nonspontaneous at 45oC. The entropy change for the reaction is +72 J/K. What can you conclude about the sign and magnitude of the enthalpy
What would the major product of the reaction be if t-butyl alcohol was combined with acetic acid in the presence of H2SO4?
What is the volume occupied by 0.118 mol of helium gas at a pressure of .97 atm and a temperature of 305k?
A sample of 0.0020 mole of HCl is dissolved in water to make a 2000mL solution. Calculate the molarity of the HCl solution, the {H3O}, and the pH.
have the same melting point.How can you determine if they are the same without using any form of spectroscopy? Explain in details.
Arrhenius acids are compounds that produce one or more hydrogen ions(H^+) plus an anion when dissolved in water. Anions can be manotamic or polyatomic
Equilibrium constant (Kc) is 1 and inital concentrations of A and B are Cao and zero (Cbo = 0), respectively. Da is equal 2 for each reactor in series configuration. What is the overall conversion of A for above equilibrium reaction?
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