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Molecular mass of a sample of 0.299 g of a gas in a 0.220 L bulb under a pressure of 0.757 atm and at a temperature of 250 C
Initially, .500 atm of H2 and .500 atm I 2 are mixed in an evacuated 1.0 L flask. The system is allowed to come to equilibrium and it is found tocontain 0.318 atm HI. What is the equilibrium partial pressure of I2 for the reaction shown below?
A hot-air dryer is used to reduce the moisture content of 1500 kg/min of wet wood pulp from 0.75 kg H20/hg dry pulp to 0.15 wt% H20. Air is drawn from the atmosphere at 28 deg. C, 760 mmHg, and 50% relative humidity, sent through a blower-heater, ..
sodium hydroxide do you need to add to the volumetric flask before you dilute the solution to volume with distilled water?
The energy bar contains 100 mg of sodium, which constitutes 4% of the maximum recommended daily intake of sodium.
A 15 gram piece of iron is heated to a temperature of 47.0 ?C and then placed in contact with a 275 g piece of copper at 20.0 ?C (Cp = 25.46 J/mol-?C). What was the final temperature of the two pieces of metal?
What is the change in the measurement of the potential if a solution of 1.00x10-3 M NaF is exchanged for another solution of 1.00x10-4 M NaF?
A solution that is known to contain come of the soluble ions from group 1 and no other cations or inteferring substances, 12 drops of 6M hydrochloric acid is added and no precipoiate forms.To clear solution is evaporated to half its volume and 12 ..
What is the mass (in grams) of the precipitate when 8.05 g of barium nitrate reacts in solution with excess sodium carbonate
Provide a method for separating the mixtures of two or three compounds, dissolved in a solvent diethyl ether. In each case one of the components will be a neutral compound.
solution of an unknown acid has a ph=1.776. What is the value of acid dissociation constant?
Important information about Molarity, You have 20 ml of 10% Bromophenol Blue (BPB). Using a 10% stock, how would you prepare 5 ml of a 0.2 % stock?
High blood levels of triglycerides are thought to be partially responsible for clogging of arteries, heart attacks, and strokes. A female had a blood test that gave a high triglyceride level
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