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explain why it was not necessary for you to determine the mass of unknown liquid that you transferred to the flask before heating in the determinig the molar mass of a volatile liquid by the dumas method expermant
What is the volume of a sample of chlorine gas with a density of 0.0032 g/cm3 and a mass of 1.45 g?
Molar Concentration of Copper (II) Nitrate, A 25.00 mL sample containing Cu2+ gave an instrument signal of 23.6 units (corrected for a blank). When exactly 0.500 mL of 0.0287 M Cu(NO3)2 was added to this solution
Suppose a vessel contains 6.4 g of NH3, how many grams of O2 are needed for a complete reaction?
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.99? Kb for ammonia is 1.8*10^{-5}.
Oxone is sometimes used in keeping swimming pool water clean. Describe using chemical reactions how Oxone keeps swiming pool water clean
Calculate the final temperature of 33 ml of ethanol initially at 20 degrees Celsius upon absorption of 541 J of heat. (density of ethanol =0.789 g/ml)?
whats the ph of a solution of 1000 mg of vitamin C (176.1 g/mol) in water (Ka = 8*10^5) diluted to 254 mL
A hydrogen-filled balloon was ignited and 2.00 gram of hyrdogen reacted with 16.0 g of oxygen. How many grams of water vapor were formed?
How long would it take for 1.50 mol of water at 100.0 0C to be converted completely into steam if heat were added at a constant rate of 19.0 J/s?
Which compound is more reactive toward electrophilic substitution e.g nitration? Explain you reasoning.
How many mmoles of mercury are in the sample? B) How many mg's of mercury are in the sample? C)What is the percent mercury (w/w) in the ointment?
Table below lists absorption values of an FT-IR band at 1530 cm^-1 due to bending vibrations of polyethylene in polyethylene/polybutadiene (PE/PBT) blends.
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