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How much limestone in kilograms is required to completely neutralize a 4.2×109L lake with a pH} of 5.6?
Th-232 has a half-life of 1.39 x 10^10 years old. A certain rock has a Pb-208/Th-232 mass ratio of 0.25/1.00. Estimate the age of the rock.
calculate the expectation value ltrgt for the 3p state of the hydrogen atom. would ltrgt be greater or smaller for the
what is the wavelength (in nanometers ) of the spectral line that correspond the n=6 level to the n=1 level in the hydrogen atom
give full mechanism: show the base-catalyzed formation of the monobutylated product from 1-chlorobutane and diethyl malonate
An oxygen tank kept at 20.0?C contains 28.0 moles of oxygen and the gauge reads 31.0 atm. After two weeks, the gauge reads 20.7 atm. How much oxygen was used during the two-week period?
a condenser is to be supplied with 0.0095 m3s of cooling water at 25oc. what diameter of schedule 40 pipe should be
What polypeptide would be synthesized from the following template strand of DNA:3' CGG AGA CGG ACG 5'
Calculate the molality of a sucrose (C12H22O11) solution containing 14.3 g of sucrose in 676 g of water.
Using a solution containing 0.302 grams of an antibiotic has an osmotic pressure of 8.34 mmHg At 23.6°C, 0.500 L. calculate its molecular mass.
During ther processing of black-and-white film, excess silver (I) halides are removed by wadhing the film in a bath containing sodium thiosulfate. This treatment is based on the followig complexation reaction:
What volume of 0.550 M Na3PO4 is required to precipitate all the lead(II) ions from 160.0 mL of 0.700 M Pb(NO3)2?
A conversion factor is a(n) used to express a quantity in different units of measurement. Multiplying by a conversion factor is the same as multiplying because the numerator and denominator are equivalent.
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