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Patients undergoing an upper GI tract lab test are typically givenan X-ray contrast agent that aids with the radiologic imaging ofthe anatomy. One such contrast agent is sodium diatrizoate (NaDTZ),a non-volatile water-soluble ionic compound. A 0.378 m solution isprepared by dissolving 38.4 g of NaDTZ in 160. mL of water at 31.2C (the density of water at 31.2 C is 0.995 g/mL). What is the molarmass of NaDTZ? What is the vapor pressure of this solution if thevapor pressure of pure water at 31.2 C is 34.1 torr?
Which of the following substances has a standard heat of formation of zero. A. pb @ 1000 degrees C B. C3H8 @ 25.0 C and 1 ATM pressure C. Solid glucose @ room temperature D.N2 @ 25.0 and 1 atm pressure
If you mix 50mL of 0.1M TRIS acid with 60mL of 0.2M TRIS base, what will be the resulting pH?
when sodium hydroxide naoh of 4.00 g of was dissolved in water of 150.00 grams a value for deltat of 10.00 degree
A 2.983 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.910 grams of KI and 50.00 mL of a 0.00894 M KIO3 solution. The excess I3..
You have a 10.40-g mixture of table sugar (C 12 H 22 O 11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be-2.24°C. Calculate the percent by mass of sugar in the original mixture.
You will need two series of standard solutions to calibrate your ion-selective electrodes - one series for sodium and one for calcium.
What is the pH of 0.20 M NaCl 2. what is the pH of 0.20 M NH4NO3 3. What is the pH of 0.20 M NaCH3COO
an object made of aluminum has a mass of 8.37 gram. when it was placed in a graduate cylinder containing 20.0 milliter of water, the water level rose to 23.1 milliter. calculate the density and specific gravity of the object.
the osmotic pressure of this soluion was 0.00155 atm at 25 degrees celcius. calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte.
What is the new molarity of a solution when 650mL of water are added to 500.0mL of a 3.2 molar solution?
Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures, including hydrogen atoms, for the formula.
The decomposition of hydrogen peroxide is catalyzed by iodide ion. The catalyzed reaction is thought to proceed by a two mechanism reaction
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