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A very flexible helium-filled balloon is released from the ground into the air at 20. . The initial volume of the balloon is 5.00 , and the pressure is 760. . The balloon ascends to an altitude of 20 , where the pressure is 76.0 and the temperature is 50. . What is the new volume, , of the balloon in liters, assuming it doesn't break or leak
what collor do these emmisions produce. b) what si the energy in KJ of these emisions for 5.00 g each of the cloride salts of Sr and Ba
You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.078 M NaOH. Next, you add 1.00 mL of 7.81 × 10-6 M lidocaine to this mixture
At the point of equilibrium there were 82.63 g of Br2(l). Determine the total pressure in the 50.0 L container at equilibrium.
Given the reaction 4Al(s)+302(g)--2Al2O3(S), what is the minimum number of moles of oxygen gas required to produce 1.00 mol of aluminum oxide?
Find the mass of the substance and the volume of a gas in a reaction - determine the mass of solid ammonium nitrate that must be used to obtain 0.145 L of dinitrogen oxide gas at STP.
Methane has a Henry's Law constant (k) 9.88x10^-2 mol/Latm when dissolved in benzene at 25degrees C. How many grams of CH4 will dissolve in 3.00L of benzene if partial pressure is 1.48atm?
when it dissolves in water (3 moles of ions/mole of salt). Calculate the freezing point of a solution containing 18.8g of Na2SO4 in 465g of water. The Kf for water is 1.86C kg mol-1.
what percentage of HSO4- is dissociated in 2M solution? Why does molarity approximate molality at low concentrations?
The compression ratio of today's cars is so much higher than in cars of years past. What is the major advantage of increasing the compression ratio?
What is the balanced equation for the combustion of 1-naphthol, C10H7OH, to give CO2 and H2O? Do not include phases.
By substituting two hydrogen atoms on the benzene ring with methyl groups, write line-angle formulas of all constitutional isomers. Name each isomer.
What is the concentration (M) of CH3OH in a solution prepared by dissolving 16.8 g of CH3OH in sufficient water to give exactly 230 mL of solution?
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