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Donny is trying to watch his daily fat intake. He goes to the supermarket to buy some yogurt. He finds that there are two different kinds of yogurt with different concentrations of milk fat: 5.7% and 2.8%. If he wants to limit his intake to 2.8g of milk fat per serving, calculate the mass of the largest serving he could have for each type of yogurt.
A Dewar flask filled with 1.00 L of liquid nitrogen is allowed to completely evaporate and warm up to room temperature (23 oC at 1 atm pressure). What change in volume does the nitrogen undergo and how much work is done by the process
Calculate the concentration (in molarity) of a Ba(OH)2 solution if 25.0 mL of the solution are needed to neutralize 20.0 mL of a 0.500 M HCl solution
The pH at 25 °C of an aqueous solution of the sodium salt of p-cresol (NaC7H7O) is 11.60. Calculate the concentration of C7H7O- in this solution, in moles per liter. Ka for HC7H7O is equal to 6.7E-11.
A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 67.9kJ of heat. Before the reaction, the volume of the system was 8.80L . After the reaction, the volume of the system was 2.80L .Calculate the total internal energy change ..
The carburizing gas holds the surface composition at 1% carbon for all t > 0. If D=1.4 x 10^-7 cm^2/sec: (a) Calculate the time required at the carburizing temperature
1. Consider treating polyenes, ethylene, butadiene, hexatriene, etc., with the one-dimensional particle-in-the-box model. What length polyene (i.e., number of C atoms) is required to absorb light in the red region of the spectrum? How does tha..
a student begins a kinetics experiment with a solution containing 0.050 starch. at time zero t 0.00 min the student
Concentrated acetic acid is 13 M. What is the molarity of an HC2H3O2 solution prepared by diluting 30 mL of concentrated acid to a total volume of 500 mL?
What is the fraction of association for the following potassium propionate solutions. The Ka of propanoic acid is 1.34 × 10-5.
Suppose you are transported from a deep mine to the top of a tall mountain. How would your mass be changed by the move
A 2.85 -g sample of an unknown chlorofluorocarbon is decomposed and produces 568 ml of chlorine gas at a pressure of 748 mm Hg and a temperature of 298 K. What is the percent chlorine (by mass) in the unknown chlorofluorocarbon
Problem- Determine the pH change when 0.072 mol HNO3 is added to 1.00 L of a buffer solution that is 0.328 M in CH3COOH and 0.286 M in CH3COO-.
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