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A 24-hour urine specimen was diluted to 2.000 L. After the solution was buffered to pH 10, a 10.00-mL aliquot was titrated with 27.32 mL of 0.003960 M EDTA. The calcium in a second 10.00-mL aliquot was isolated as CaC2O4(s) redissolved in acid, and titrated with 12.21 mL of the EDTA solution. Assuming that 15 to 300 mg of magnesium and 50 to 400 mg calcium per day are normal, did this specimen fall within these ranges?
What is the name and the geometric isomers structure of cis and trans of this coordination compound NH4[Pt(NH3)4Cl2]
oleci acid has following compostions : 76.54%C, 12.13%H, 11.33% O. If the experimental molar mass is 282.g/mol, what is the molecular formula of oleic acid?
Starting from the left side of the periodic table, the melting and boiling points of the elements first increase, and then decrease
Problem- In a constant-pressure calorimeter, 75.0 mL of 0.910 M H2SO4 was added to 75.0 mL of 0.490 M NaOH. The reaction caused the temperature of the solution to rise from 23.96 °C to 27.30 °C. If the solution has the same density and specific he..
the solubility of nitrogen n2 in blood at 37 degrees celsius and at partial pressure of 0.80 atm is 0.00056 moll.a
How many joules of heat are given off when 5 g of water cool from 75 degrees C to 25 degrees C?
A solution is prepared by dissolving 0.23 moles of hydrofluoric acid and 0.27 moles of sodium fluoride in water sufficient to yield 1.00L of solution. What is the pH after the addition of 0.05 mole of HCl. Assume that the volume does not change. (..
How many milliliters of 20.0 M calcium chloride would you use to prepare exactly 800 ml of a solution that contains 5.00 moles/liter of chloride ions.
However, the compounds are diprotic and only dissociate two of the H atoms. In these compounds, which H atoms can be dissociated in water. Why are the other two H atoms not able to dissociate in water.
is it possible for some of the aldehyde to not have reacted and beseen in the product mixture? or does the reaction
Nitrogen triflouride decomposes to form nitrogen and flourine gases according to the following equation: 2NF3 (g) N2(g) + 3F2(g) when 2.06 mol of NF3 is placed in a 2.00-lcontainer and allowed to come to equalibriumk at 800k,
if 50.00ml of Ba(OH)2 solution is mixed with 30ml of HBr solution, what is the pH of the resulting solution. (0.1385 M Ba(OH)2 and 0.2050 M HBr).
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