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1. Calculate the concentration of 20.5g dissolve oxygen (DO) in ppt present in 2.00L of University pond water.
2. A 750ml water sample collected from University hatchery is found to have 0.0137ppt of Nitrogen(N) content. What is the amount in milligrams of Nitrogen present in the water.
3. What is the amount sea water in milligrams that contains 0.0187mg of Calcium(Ca) where in the concentration is 1.03ppt?
Formula given: Mathematically: ppt = amount of solute/amount of solution x 1000
A student titrates 25.0 mL of a 0.100 M solution of acetic acid with a 0.100 solution of sodium hydroxide. Calculate the pH at the equivalence point.
If the volume of the gas sample is decreased to 15.3 L holding the temp constant, the average molecular speed will increase, decrease or remain the same?
During a titration, the following data were collected. A 25 mL portion of a solution of an unknown monoprotic acid was titrated with 1.0 M NaOH(aq).
the average ph of precipitation in rural areas is 7.00. assuming that the phnbspis controlled by the carbonate system
Write a balanced equation for the conversion of C6H5CHOHCH3 to the methyl ketone in the presence of I2 and NAOH
which is a base that has a pKb=5.9 and FW= 121.1g/mole 1) what mass of A do you need? 2) what type of reagent do u need to add? 3) what ratio of the base to its conjugate acid is present in the final buffer
Starting with the fully protonated tripeptide, determine the magnitude and the sign of the overall charge on tripeptide at
A solution is prepared by mixing 35.00 ml of 0.061 M Zn(NO3)2(aq) with 20.00 ml of KOH(aq) with 20.00 ml KOH(aq) with a pH of 9.00. a) will zinc hydroxide precipitate (Ksp zn(oh)2=4.0*10-17)
Show utilizing an example that the following two formulations of the Pauli Exclusion Principle are equivalent. Wave function explaining a many-electron system must change sign under the exchange of any electrons.
An object has a mass of 5.95g. Assuming the density of water is 1 g/mL, what is the volume of the object including air?
Explain what the fragmentation patterns of the following molecules are List the fragment and the M/z values- 1. Isopropylcyclohexane
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 5.60 * 10^2 cal of work done on it?
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