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Federal regulations limit the concentration of Lead in drinking water to 15 ppb. It is discovered that some water had lead levels of 6.4x10^-5 M. what is the concentration of lead in this water sample using units of parts per billion?
Question- Select the pair of substances in which the one with the lower boiling point at a given temperature is listed first.
A solution of 0.1% sodium dodycl sulfate (SDS) binds so strongly to polypetide chains that one detergent molecule is sufficient to saturate two amino acid residues.
A dryer removes 20,000 lb/hr of water from paper. Air at 70 deg F and 50% Relative Humidity enters and leaves the dryer at 140 deg F at 80% Relative Humidity. The barometric pressure is 14.3 psi. Calculate the total air flow to this dryer (ft^3/mi..
t 50°C the value of KW is 5.5 x 10-14. What are the molarities of hydronium ion and hydroxide ions in a neutral solution at this temperature.
question an unknown mass of each of the following substances initially at 24.0 c absorbs 1920 j of heat. the final
As a part of this exercise, you will need to prepare 100 mL of a 0.1 M phosphate buffer at pH 7.5, and you need to calculate the amounts of NaH2PO4 and K2HPO4 that you need to use in your buffer.
Important information about Solution Concentrations, Find the concentration of 500mg of alltrans retinol 0.1% per 1 ounce of solution.
10% tin can be added to copper in the molten state and cooled to give a substitutional solid solution known as bronze. This means that the crystal structure of the solid solution
A current of 0.0100 A is passed through a solution of rhodium sulfate, causing reduction of the metal ion to the metal. After 3.00 h, 0.038 g of Rh has been deposited. What is the charge on the rhodium ion, Rhn+? What is the formula for rhodium su..
Titration of the I2 produced from .1045g of primary standard KIO3 required 30.72ml of sodium thiosulfate, Calculate the concentration of the Na2S2O3
Calculate the amount of heat transfer when 3.55 g of Mg (s) react in a constant pressure? delta H = -1204
In a Sn1 reaction, define what will happen to the rate of the reaction if the concentration of nucleophile is decreased by 50%. Explain what if the reaction is Sn2
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