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the number of vacancies in some hypothetical metal increases by a factor of 6 when the temperature is increased from
a soln was prepeared by dissolving 56 g of non electrolyte substannce in 45 g of water the freezing point depression
1799 ml of 0224 m nano3 2344ml of 0151 m na2so4 and 1524 ml of 0110 m cano32 are mixed in a beaker calculate the molar
the diameter of a penny is 19mm the diameter of a cu atom is 26a how many cu atoms side by side in a straight line
balance the following redox equation using the smallest integers possible and select the correct coefficient for the
1 a sample was spotted on two different tlc platesa one plate was placed in a chamber containing methanol and after
h2s and h2o have similar structures and thier central atoms belong to the same group yet h2s is a gas at room
explain how micelles and more complex solutions work consider all solute-solute solvent-solute and solvent-solvent
if 45 ml of 0250 m pbcl4 solution reacts with 20 ml of nh42so4 what is the molarity of the
a weak acid ha pka500 was titrated with 100m koh the acid solution has a volume of 10000ml and a molarity of 0100m find
a compound is 800 carbon and 200 hydrogen by mass assume a 100- sample of this compound how many grams of each element
because molecular bromine is a strong and toxic oxidant excess bromine is neutralized addition of the aqueous sodium
the bromination solution is prepared by mixing liquid bromine with glacial acetic acid 14 vv bromine to acid the
1 you find a reagent bottle with a colorless iodide salt inside the label on the bottle says cobalt iodide is the
explain maxwells distribution diagram and how does it relate to temperatures what happens to this distribution as the
a sample of solid aluminum with a mass of 175 kg is cooled at constant pressure from 300 to 265 k calculate the entropy
a 65g sample of xenon at 29815 k is allowed to expand adiabatically from an initial pressure of 30 bar to a final
a sample of a flourocarbon gas was allowed to expand to twice its volume in this reversible adiabatic expansion the
an empty weighing bottle had a mass of 10313 g after adding water from a 25-ml pipet the mass was 35225 g if the lab
what effect does an increase in the heating rate have on the boiling temperature during a
if the work function of a metal is 351 ev what is the maximum wavelength of light that can be used to observe the
hydrocarbon mixtures are used as fuels what mass of co2 gas is produced by the combustion of 1971 g of a mixture that
the vant hoff factor for kcl is i 185 what is the boiling point of a 090 m solution of kcl in water for water kb 051
a water heater contains 55 gallons of water how many kwh of energy necessary to heat the water heater by 25 degree
how many milliliters of 0150 m na2s2o3 solution are needed to titrate 2433 g of i2 to the equivalence