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If you thoroughly mix 25 mL of a liquid chemical, whose density is 0.95 g mL -1, with 200 mL of water, what is the concentration of the chemical in the resulting solution in g per L?
A cube of osmium metal 1.500cm on a side has a mass of 76.31g at 25°C. Calculate the mass of 0.1500L of benzene at this temperature.
How many grams of barium sulfate are produced if 25.34 mL of 0.113 M BaCl2 completely react given the reaction.
The mobile phase used in High Performance Liquid Chromatography (HPLC) of Analysis of Steroids, was a 50/50 mixture of water and acetonitrile
A 2.00 L glass soda bottle filled merely with air is tightly capped at 24 C and 744.0mmHg. If the bottle is positioned in water at 75C what is the pressure in the bottle
We have 500 mL of a solution with Ba^(2+)=0.10M. How many grams of LiF must be added to begin precipitation of BaF2? The Ksp of BaF2 is 1.7 x 10^(-6)
Since you need pressure based constant use ideal gas equation (PV=nRT) to convert moles of gas into pressure with units of atmospheres. R=0.0821 L atm/mol K
Osmosis is the natural tendency of a substance to move from an area of higher concentration to one of lower concentration. true or false
Iron can be prepared by the reaction of Fe2O3 with carbon according to the equation: 2Fe2O3(s) + 3C(s) 3CO2(g) + 4Fe(s) If 401 g Fe2O3 and 205 g C are heated together, how many grams of iron could be produced?
Why does a basketball player driving in and jumping for a "slam dunk" appear to hang in the air at the maximum height of the jump? Is an object projected vertically upward in free-fall? Explain.
there is a no change in VMAX and an increase in KM,app. E. As [I] increases, there is a decrease in VMAX and no change in KM,app.
Suppose one mole of superheated water is evaporated at 383 K and 101 kPa. Compute DS of the water and of the surroundings, DHv(373 K) = 47.3 kJ mol-1, Cp(H2O,l) = 75.4 J K-1 mol-1, and Cp(H2O,g) = 30.36 + 9.61x10-3T + 11.8x10-7T2 (J K-1 mol-1). Ex..
A system had 150 kJ of work done on it and its internal energy increased by 60 kJ. How much energy did the system gain or lose as heat?
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