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The average rate of consumption of Br- is 1.85×10-4 over the first two minutes. What is the average rate of formation of Br2 duringthe same time interval?
Why is it advisable to run a mixed melting point determination on samples of two different compositions before concluding that the two compounds are identical
Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in studies of nucleic acids. The half-life of phosphorus-32 is 14.3 days. What mass of phosphorus-32 is left from an original sample of 195 mg of Na332PO4 a..
Calculate the standard Helmholtz free energy of formation of delta fA of CH3OH(l) at 298K from the standard Gibbs free energy of formation and the assumption that H2 and O2 are ideal gases.
A chemist found that a certain amount of a CFC gas required 186 seconds to effuse through a porous plug when the pressure was held constant.
When 1.0 g of snack cake is combusted in a constant-pressure bomb calorimeter with a heat capacity (including its water) of 10.0 kJ/°C, the temperature of the calorimeter rises by 2.24°C. How many nutritional calories (Calories) are in one serving..
A buffered solution is made by adding 50.9 g NH4Cl to 1.00 L of a 0.75 M solution of NH3. Calculate the pH of the final solution. (Assume no volume change.)
When 2.42g of a nonelectrolyte solute is dissolved in 855 mL of water at 21 degree C, the resulting solution exerts an osmotic pressure of 829 torr. What is the molar concentration (M) of the solution
a fire pump delivers 1500 gallons per minute to a buildings automatic sprinkler system. during a structure fire the
Give the bond angle and describe the shape around the central atom designated in this molecule. O in HO of H3PO4 (no H-P bond) a. trigonal planar; 120° b. trigonal planar;
Explain why the number of moles must remain constant for any of the gas laws to apply
In a study of the effect of temperature on halogen decomposition. 0.50 mol of I2 was heated in a 2.5 L vessel and the following reaction occurred. I2 (g)--> 2I (g)
you and another student were each given an unknown compound. both samples contained pale yellow solids. you both used
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