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A sample of argon gas at a standard pressure occupies 1000. mL. At constant temperature, what volume does the gas occupy if the pressure increases to 800. mmHg?
The molecular weight for chlorophyll a is 893.49 g/mol. If the molar concentration of the solution is .00000387, then what is the concentration of the solution in ppm (parts per million)
the specific heat capacity of zinc is 0.389J/Kg, and that of water near 100 degrees celsius is 4.22J/Kg. Calculate the final temperature reached ny the zinc and water
The fluoridation of city water supplies has been practiced in the US for several decades. It is done by continuously adding sodium fluoride to water as it comes from a reservoir.
elemental exonium not a real element con- sists of two major isotopes abundance mass 5598 amu 45114 amu what is the
Calculate the pH of a solution formed by mixing 10.0 mL of 0.100 M HBr with 20.0 mL of 0.200 M HCl.
Choose the selection which correctly identifies the forces which must be overcome to convert SbF5 from a liquid to a gas. Only London dispersion forces must be overcome.
For a particular liquid, raising its temperature from 330 K to 353 K causes its vapor pressure to double. What is the enthalpy of vaporization of this liquid? (R = 8.31 J/(K· mol))
Calculate the change in temperature that occurs when 4.55 g of solid NaOH is added to 100.0 g of water in a constant pressure calorimeter. The specific heat of the solution
For each of the following combinations of (delta H) ?H° and (delta S ) ?S° for the reaction at 25 ° C, describe whether or not the reaction will be spontaneous at 25 ° C and what will happen it the temperature is increased. Explain your descriptio..
If only 4.000M HCl was available for you to use, calculate the volume of 4.000M HCl solution required to completely react with 1.700g of Na2CO3
Problem- For a particular isomer of C8H18, the following reaction produces 5104.1 kJ of heat per mole of C8H18(g) consumed, under standard conditions.
Do carbon dioxide and water have the same molecular geometry? If not, what attributes cause these molecules with similar formulas, AB2, to have different geometries
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