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Pressure was exerted with a piston on molten naphthalene at 95 degrees celsius. The vapour pressure of naphthalene under 1.0 bar is 2.0 kPa and its density is 0.962 g/cm^3. What is the vapour pressure when the pressure on the liquid is 15 MPa?
what is the mass of the zinc sulfide product. Express your answer with the appropriate units.
a quantity of 1.922g of methanol ch3oh was burned in a constant -volume bomb calorimeter. consequently the temperature
How many grams of KCN will be needed to make 817 mL of pH = 11.836 solution when added to distilled water (Ka HCN= 6.2x10-10)
a freshman is currently enjoying the arts studio program she is pursuing at a well-known university. in her free time
If the reaction 2 NO(g) + O2(g) ? 2 NO2(g) is carried out at standard conditions, what is the total pressure. What is the temperature under standard conditions
Why does a pure enantiomer have a lower melting point range than the racemic mixture?
the current generator box was only 89.3% current efficient, losing some current. The production of the tri-iodide ion was by the same oxidation reaction as in our lab. What is the ppm of water in the 250 ml ethanol sample?
A thief plans to steal a gold sphere with a radius of 28.8 cm from a museum. If the gold has a density of 19.3 {rm g/cm}^3, what is the mass of the sphere? [The volume of a sphere is V = (4/3)pi r^3.]
the rate constant for the elementary reaction is 7.1x109mmiddots at 25degc. 2 nog o2g 2 no2gnbspwhat is the rate
calculate the number of excess reagent units remaining when 188 PbS formula units and 279 O2 molecules react?
The solubility of CO2 in water at 25°C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions. (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry's law.
Our quality control department is being moved to a different location and will not be able to handle any projects for a few weeks.
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