Explain the ph and concentrations of k+
Calculate the pH and concentrations of K+, H+, OH-, H2PO4-, PO43- , HPO42- from a1.00L solution which is having .0250 mol KH2PO4 and 0.030 mol KOH.
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Pure water is pumped into tank with rate of 2 gal/min, and when solution is well stirred, it is pumped out. Write the differential equation for amount of salt A(t) in tank at t > 0.
Calculate the ph for this reaction when half the amount of titration requires red to reach the equivalent point has been added.
For each of the following confidence intervals, indicate how much of the distribution would be placed in the cutoff region for a two tailed test.
Explain what volume of is required to neutralize the NaOH solution? Calculate the ph of the acid/base solution when the following volumes of HNO3 have been added.
One is filled with Hydrogen gas, the other with Oxygen, each at the same pressure. Both containers are heated above 100 degrees C until the pressure in each is 1.60 atm.
Calculate how many significant figures should be used to express the mass of anyone using the scale whose mass is between 10 and 99kg. A bathroom-type scale is calibrated in the tenths of a kilogram from 1 to 200kg.
The atomic mass of born is10.81 amu. Boron obtained from the borax deposits in Death Valley consists of 2 isotopes. They are boron-10, boron-11 with atomic masses of10.013 amu and 11.009 amu, respectively.
If student buys the $1000 IRA when he is 25 years old and expects to earn the average of 4% per year compounded annually over 35 years (until he is 60), how much accumulate in investment?
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