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Question: At 90 oC, the vapor pressure of 1,2-di methylbenzene is 20 kPa and that of 1,3-dimethylbenzene
Is 18 kPa. (a) What is the composition of a liquid mixture that boils at 90 oC when the pressure is 19 kPa? (b) What is the composition of the vapor produced?
You start with 100.0 mL of a 0.2500 M solution of NaCl sitting in a beaker. After several days you test the solution and find that it is now 0.3125 M. How much water must have evaporated?
Provide a structure for the following compound: EI mass spectrum: two molecular ions of about equal intensity at m/z = 180 and 182; IR: 1740 cm-1; 1H NMR
Air is flowing through a duct. The atmospheric pressure is 730 mm Hg. What is the absolute pressure of the air in inches of mercury
A 51 kg person drinks 400. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 15% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
In an experiment to analyze mixture of sodium carbonate, sodium bicarbonate, and an inert component. 10.00ml of 0.100M HCl were used to titrate 0.300g of the sample using phenolphthalein as the indicator. Calculate the number of moles and the mass..
How much energy is released from the complete combustion of 63.0 g of sulfur in this equation:
Express your answer numerically in calories using two significant figures.
The central atom has 4 electron domains. d) The central atom has 5 electron domains. e) The central atom has 2 electron domains.
The flask was removed, was quickly cooled to condense the volatile liquid, dried and weighed. The mass of the flask and the volatile liquid is 34.743 grams
should steam distillation be considered as a method of isolation and purification of an organic liquid that has a vapor pressure
Research in surface science is carried out using ultra?high vacuum chambers that can sustain pressures as low as 10?12 torr. How many molecules are there in 1.00 cm3 volume inside such an apparatus at 298 K? What is the corresponding molar volume ..
If you start with 3.50g of aluminum, 1.5mL of 1.4M potassium hydroxide and 25.0mL of 9M sulfuric acid (with excess water), what is the limiting reactant?
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