Will this cause your calculated concentrations to be high
Suppose that there is something in your sample that is absorbing at the same wavelength as the material you are looking at. Will your measured %T be too high or too low? Will this cause your calculated concentrations to be too high or too low?
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How do you calculate the pH and pOH of an aqueous ammonia solution that has an OH - concentration of 1.9 x 10 -3 ? What is the concentration of the Ammonium ion?
Draw the structures of the 4 branced,constitutional isomers of n-hexane and circle the ones that should be chiral ( that is draw circles around the structures that cannot be super-imposed on their mirror images).
What is the ionization energy of rubidium atoms (in kilojoules per mole) if light with Lambda = 58.4 nm produces electrons with a velocity of 2.450 x 10^6 m/s? (The mass of an electron is 9.109 x 10^-31 kg)
Canadian 10¢ and 25¢ coins are made of pure nickel which has a density of 8.902 g/cm3. Suppose each dime weighs 2.14 g and each quarter weighs 5.35 g.
The boiling point of a solution of an electrolyte (122.30 grams;molar mass 196 g/mol) dissolved in water (218.2 grams) wasdetermined to be 102.33 deg C. What is the value for the van't Hofffactor i for the electrolyte in this solution?
A protein subunit from an enzyme is part of a research study andneeds to be characterized. A total of 0.160 g of this subunitwas dissolved in enough water to produce 2.00 ml ofsolution.
At 760. Torr, an unknown liquid boils at 239.8 K. At 205.0 K the equilibrium vapor pressure of the unknown liquid is 103.5 Torr. What is the molar enthalpy of vaporization for this liquid?
Methyl Orange is an acid-base indicator. In dilute solution at pH greater than 4.4, it is yellow. At pH = 3.2 the solution appears red.
Water enters a pipe of diameter 3.0 cm with a velocity of 3.0 m/s. The water encounters a constriction where its velocity is 15 m/s. What is the diameter of the constricted portion of the pipe?
When reducing a ketone to an alcohol in a lab, why do we have toadd sodium borohydride little by little under ice water? Also, whenoxidizing an alcohol to ketone, why do we add glacial acetic acid before adding NAOCL?
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