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If the daily requirement for calcium (in the form of ions) is 1000 mg for those people from ages 19 to 50, calculate what percentage of your daily requirements could be met by drinking 50.0 ounces of your local water. (When determining the percentage, we use the part from question B divided by the whole of 1000 mg times 100)
A gaseous mixture of O2 and N2 contains 38.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 365mmHg
Estimate the age of a bottled wine that has a tritium, 3^H, content 65.% that of freshly bottled wine. Tritium decays by beta decay and has a half life of 12.3 yr.
The dissociation energy for N2 is 9.76 eV. Light of energy21.23 eV cause N2 to emit photoelectrons, the most energetic of which have kinetic energy of 5.42 eV. The energy required to ionize a nitrogen atom is 14.53 eV. Approximate the dissociation..
How many moles of PCl_5 can be produced from 21.0 g of P_4 and excess Cl_2?
aluminum and oxygen react to form aluminum oxide by the equationals o2gnbspnbsp regnbspnbsp al2o3sin a certain
The attached flow sheet is associated with the solvent extraction-electowinningplant for which you work. All of the numbers represent the copper concentration in g/L and all the parenthetical numbers represent the sulfuric acid concentration in g/L. ..
The formula Co(NH3)5CO3Cl could represent a carbonate or a chloride: write the two formulas, draw the two structures and name them below.
what would be the effect on your calculated mass percent recovery of cu if you did not completely react the mg in the
the solution diluted in half by water ( 1mL of X and 1mL of H2O) has an absorbance at 425 nm of 0.8 and a molar extinction coefficient of 1.5 x 10^3 M^-1 cm^-1. what is the molar concentration of the original solution of X
what is E cell under final equilibrium conditions of: 0.52 M Cr2O72-; 2.25 M HCl; and 0.56 M I-, resulting in a pressure of I2 that is 0.142 atm and a chromium (III) ion concentration of 0.45 M
What is the balanced equation for the reaction of phenyl magneisum bromide with benzophenone to form triphenylmethanol
A benzoic acid solution was prepared by adding 0.488 g benzoicacid to a 100 mL volumetric flask and then adding enough water tobring the total solution volume to 100.00 mL.
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