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A college student produces about 100 kcal of heat per hour on the average. What is the rate of energy production in watts? How many kilocalories of heat does the operation of a 1200-W hair dryer produce each second?
Problem 2.2 The temperature of 1.30 mol of an ideal gas increases from 10.4 celciusto 48 .8 celcius as the gas is compressed adiabatically. Part A Calculate q for this process, assuming that .C=3R/2 Express your answer to one significant figure an..
A single beam photometer with a linear response showed a detector signal of 73.6 uA for a blank solution. Replacing the blank with the sample solution yielded a signal of 24.9 uA. What is the transmittance expected for a sample solution of twice t..
Calculate the mole fraction of octane in the vapor at the above temperature.
hemoglobin contains .33 fe by mass. a .200 g sample of hemoglobin is dissolved in water to give 10.0 ml of solution
Why cyclo propane is more stable than cyclohexane
what is the balanced net ionic equation? AND what is the molarity of the tartaric acid solution?
Draw the missing intermediate and add curved arrows for the production of phenylethyne by the double dehydrohalogenation
4Au + 8KCN + O2 + 2 H2O --> 4 KAu(CN)2 + 4 KOH what is the minimum amount of KCN (in g) needed to react with 15.6 g of gold?
The standard free energy change for the hydrolysis of ATP is -30.5 kJ. In a particular cell, the concentrations of ATP, ADP, and Pi are 3.6×10 3M, 1.4×10 3M, and 5.5×10 3M, respectively.
A casting of an alloy in the form of a disc weighed 50 g. The disc was 0.25 inches thick and had a circular cross section of diameter on 1.380 inches. What is the density of the alloy
Indicate whether the pH is equal to 7, greater than 7, or less than 7 at the equivalence point for the following titrations at 25oC. a) HF + LiOH
the concentration of h ion in gastric juice is 0.1 m. ph of the protons arise from blood 7.4.compute the free energy
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