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Which solution do you expect to have the lowest boiling point? Explain your answer. a. 10 grams of Na2SO4 in 60 mL water b. 10 grams of KCL in 60 mL water c. 10 grams of glucose (C6H12 O2) in 60 mL water
Problem- A certain isotope has a specific activity of 7.29e-4 Ci/g. How many alpha particles will a 75.0 mg sample emit in one hour
How much heat is required to change one gram of ethanol ice at 144 degrees C to ethanol vapor at 78 degrees C.
a sample of chlorine gas occupies a volume of 946ml at a pressure of 726mmhg. calculate the pressure of the gas in in
If the standard silver half-reaction potential is set to .80V, calculate the potential for the zinc half-reaction. Write the net ionic equation for the reaction that occurs in this voltaic cell.
Using pH-based arguments only, why do scientists use phosphate-based bufers instead of buffers made using acetic acid
Problem- Calculate the radiation dosage (in grays) for an 77-kg person that is exposed for 3.0 seconds to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and each beta particle has an energy of 2.0×10-13 J.
In order to measure the enthalpy change for this reaction, 1.25 g of NH4NO3 is dissolved in enough water to make 25.0mL of solution. The initial temperature is 25.8 C and the final temperature
a solution is made by taking 100.0 ml of 2.0x10-2 molarnaoh and mixing in 50.0 ml of 3.0x10-2 molar hcl. the acidityof
propes a mechanism that shows why P-chlorotoluene reacts with sodium amide in liquid NH3 At -33C to give a 1:1 mixture of P-toluidine and m-toluidine
Determine the volume of the gas at a pressure of 150.0 kPa and a 26 degree Celsius of temperature?
Air Sampling Problem: You are an industrial hygienist that is conducting personal sampling on a worker who is overseeing a production process involving use of toluene (Note: The Occupational Safety and Health Administration has established a Pe..
Question- Part a- Calculate E*cell and Delta G for Cu2+ (aq) + Sr(s) yields Sr2+(aq) + Cu(s), what is the ratio of concentrations to produce this cell potential
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