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Problem set:-
a.John has a fasting blood glucose level of 184 mg/dL. What is the concentration of glucose in his blood. (glucose MW = 180g/mol, mg/dL = mg/100 mL)?
b. John takes part in a water drinking contest and drinks 2 liter of water extremely fast. What is the concentration of glucose in his blood now. Assume he started with 5 liters of blood before the drinking contest.
c. In terms of osmolarity, what is the danger of drinking that much water so fast. What is will happen to the cells in his body?
d. John gets sick from drinking all that water fast, but recovers. He goes to lab the next day and makes a 50 mM solution of NaCl. He believes this NaCl solution has the same osmotic strength as 50mM urea. Is his assumption correct? Please explain (no calculations are necessary but please explain).
What was the molarity of the KOH solution if 23.2ml of 1.50 M H2SO4 was needed? The equation is 2KOH(aq) + H2SO4(aq)----->K2SO4(aq) + 2H2O(l)
empirical and molecular formula what are both the empirical and the molecular formula for the compounds described
Liquid nitrogen has a density of 0.808 g/mL at 77 K. A sample of 1.5 L of liquid nitrogen is allowed to evaporate at 22.2 °C and 0.998 atm of pressure. What volume will the nitrogen gas occupy
A 20 mg sample of a compound is dissolved in 5.0 ml of water and extracted with 2.5 mL of heptane. After separation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition coefficient of the compound, Khep..
The normal boiling point of methanol is 64.7°C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 710.0 torr at 64.7°C. What is the mole fraction of methanol in this solution?
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.49. What was the concentration of the solution? The Ka of lactic acid is 1.4 10-4.
describe the basic steps involved in a gravimetric analysis. how does this procedure help us determine the identity of
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K.
Some atomic properties depend on the average value of 1/r rather than the average value of r itself. Evaluate the expectation value of 1/r for a hydrogenic helium 1s orbital.
A copper penny can be dissolved in nitric acid but not in hydrochloric acid. Explain why in terms of E? Explain what would happen as the newer pennies are added to nitric acid and hydrochloric acid.
What is the specific heat capacity of a liquid if 450.0 kJ of heat caused 230.0 g of the liquid if temperature changed from 25°C to 28°C and state the reaction exothermic or endothermic
what sort of interaction occurs between adjacent alcohol molecules? and what sort of interaction occurs between
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