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A 1.784 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 1.570 grams of KI and 50.00 mL of a 0.00989 M KIO3 solution. The excess I3 was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
how many grams of sulfuric acid are produced?
An impure sample of potassium hydrogen phthalate, KHP, having a mass of 111.07 g was dissolved in water. This acid sample was neutralized by the addition of 310.0 mL of 0.250 M NaOH
In a fuel cell using oxygen as the oxidizer and hydrogen as the fuel, what is the overall cell reaction?
The specific heat capacities of Fe(s) and water are 0.45 J/g? and 4.184 J/g?, respectively. What is the final temperature of the system?
A solution is 89.8% by volume benzene(C6H6) in carbon tetrachloride at 20 degrees C. The vapor pressure of pure benzene at this temperature is 74.61 mmHg and it's density is 0.87865 g/cm^3;
Molybdenum crystallizes in a body-centered cubic lattice (the Mo atoms are at the lattice points only). If the density of the metal is 10.3 g/cm3, what is the unit cell edge length in pm?
How long (in hours) would this current have to be applied to plate out 8.90 g of nickel?
Show that the balanced equation obeys the law of conservation of mass.
115 mL of H_2O is initially at room temperature 22 0C. A chilled steel rod at 2 0C is placed in the water. If the final temperature of the system is 21.1 0C, what is the mass of the steel bar.
Calculate the mass of Nitrogen at room temperature dissolved at room temperature in an 80 L aquarium. Assume a total pressure of 1 atm and .78 mole fraction.
If the aluminum block is initially at 25^C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol ..
what are the general requirements must be met before two compounds could be isomers?
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