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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?
A 29.0-g sample of water at 250. K is mixed with 51.0 g water at 320. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A mixture of gases contains 0.290 mol CH4, 0.240 mol C2H6, and 0.300 mol C3H8. The total pressure is 1.40 atm. Calculate the partial pressure of the gases.
Since there are that many Moles of KOH there must be equal moles of the acid. So 4.14*10-3moles/.05L= X M of initial acid== .0828M?
determine the freezing-point depression of H2O if 77 g of sucrose (C12H22O11) are dissolved in 400 g of water
Suppose that 24 of each of the following substances is initially at 29.0. What is the final temperature of gold upon absorbing 2.30 of heat?
A mysterious material was purified from safflower oil (hint: full of fatty acids). Upon ozonolysis it gave the following compounds in their respective molar ratios.
Write the reactions responsible for the LIQUID PHASE oxidation of S(IV) to S(VI), and show how the oxidation can lead to a decrease in pH of rain water.
A beaker with 120 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.50 mL of a 0.250 M HCl solution to the beaker. How much will the pH..
What is the theoretical yield of bromobenzene in this reaction when 33.0 g of benzene reacts with 71.5 g of bromine?
The calculations are based on the principal components of meat being fat ( acetone soluble) and protein (acetone insoluble or fat-free meat in report sheet ).information, the calculations correctly calculate what quantity, % fat or % fat-free meat..
A 89 L sample of dry air is cooled from 134°C to -18°C while the pressure is maintained at 2.85 atm. What is the final volume?
what is the molar concentraion of the salt solution formed n this reaction? B. what is the molar concentraion of the excess reactant once this reaction has finished?
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