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When a nitrite containing sample with a mass of 3.000 g was analyzed, 16.65 mL of 0.1500 M Na2S2O3 solution was required to completely titrate the sample. What is the mass percent of NO2- ion in the sample?
A rigid container of O2 has a pressure of 388kPa at a temperature of 713K. What is the pressure at 273K.
100g of orange juice is said to contain about 50mg of ascorbic acid. How much of a 2E-4M DCPIP titrant should be required to titate a 100g sample. What would be a good sample size.
What is the elution order if these same compounds are separated on a silica column using a polar solvent such as water?
If 2.0 x 10^23 argon atoms strike 4.0 cm^2 of wall per second at a 90 degree angle to the wall moving with a speed of 450 m/s. what pressure (in atm) does the gas exert on the wall
thiocyanate ions to a solution in which the molarity of silver ion is initially 0.1M. Calculate the maximum concentration of SCN- ion can exist in solution before AgSCN begins to precipitate.
a) how many moles of sulfur are in 23.2 g of (C3H5)2S, b) how many atoms of hydrogen are in 0.75 mol of (C3H5)2S, c) how many grams of carbon are in 4.20 x 10^23 molecules of (C3H5)2S, d) how many atoms of carbon are in 15.0 g of (C3H5)2S
explain the following observations: a)an open can of soda loses its "fizz" more quickly at room temperature than in the refrigerator. b) chlorine gas in tap water escapes as the sample warms to room temperature. c)less sugar dissolves in iced coff..
How many grams of NO could be formed from a mixture of 44.7 g of NH3 and 42.7 g of O2? 2. How many grams of NH3 would remain?
a gas sample has an original volume of 680 ml when collected at 720 mm and 28degc. what will be the volume of the gas
Calculate the five points indicated in the experiment introduction and show these values in a small table along with one sample calculation.
What are the sources of error that could happen in the experiment of ''dumas method for determining the molecular weight of volatile liquids''
What is the mechanism for the side products that are formed when 4-methylcyclohexene is formed form the dehydration for 4-methylcylcohexanol
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