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A gas is confined in a 0.5 m diameter cylinder by a piston, on which rests a weight. The mass of the piston and weight together is 100 kg. The local acceleration of gravity is 9.80 m/s2 and the atmospheric pressure is 101.6 kPa. Assume no friction between the piston and cylinder. What is the force exerted on the gas by the atmosphere, the piston and the weight? What is the pressure of the gas in kPa? The gas is heated by raising the piston by 1.20 m. How much work is performed by the expanding gas
A certain second-order reaction () has a rate constant of 1.80×10-3 at 27 and an initial half-life of 216 . What is the concentration of the reactant after one half-life?
How many grams of lanthanum chloride LaCl3 must be added to 1 kg of water to lower the freezing point of water by 1.1 degrees C?
If 114 grams of CS2 are burned in an excess of O2 (an amount sufficient to burn completely all 114 g of CS2), how many moles of SO2 are formed?
calculate the mass of the sodium. The vapor pressure of water is 23.8 mm Hg at 25.0°C. Use molar masses with at least as many significant digits as the data given.
Why do heavier atoms have a larger translational partition function than lighter atoms at the same temperature?
When using paper chromatography to separate components of a mixture, the manual suggests that water is wicked through the paper.
How many liters of CO2 are produced when 15 liters of O2 are consumed
A sample of arabinose, C5H10O5, contains 0.6000 moles of the substance. How many carbon atoms are in the sample?
Draw the structure of propanoic acid (propionic acid) with the approiate hydrogen bonded water molecules -- that is, put in the maximum number of water molecules that could H bond with propionic acid. Remember -- H bonds (hydrogen bonds) are indic..
whats the amount of heat required to raise the temperature of 165 g of water from 12.0 C to 88.0 C (sp. heat of H20(l)= 4.18 J/g)
dissolved in enough water to produce 162.5 mL of solution and that 18.8 mL of this solution is titrated to the stoichiometric point with 14.6 mL of 0.0307 M HCl(aq). What is the percentage purity of the original sample?
Give the cell notation based on the following reaction: Fe(s) + Hg2 ++ (aqueous) = Fe++ (aqueous) + 2Hg (l) the solution concentrations are 0.01 M
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