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What will be the temperature difference needed in a hot-air balloon to lift 1.00 kg of mass? Assume that the volume of the balloon is 100 m3, the temperature of the ambient air is 25 oC, the pressure is 1.00 bar, and air is an ideal gas with an average molar mass of 29 g/mol.
What is the rate of the reaction if the concentration of CH3Br is doubled? (b) What is the rate of the reaction if the concentration of NaOH is halved
Calculate the energy that must be removed to convert substance X from a gas at 119°C to a solid -47.9°C. Assume X has a molar mass of 75.0 g/mol.
bone was dissolved in hydrochloric acid giving 50.0 ml of solution containing calcium chloride cacl2. to precipitate
Hydronium ion concentration using Henderson-Hasselbalch equation - What is the hydronium ion concentration of a solution
Describe the technique used to determine the density of approximately 5 gram samples of the following at 20 degrees C and 1 atmosphere pressure: A) Gasoline B) Granular Sugar C) A lump of gold D) Mercury
What is the uncertainty in the energy of the excited state. What is the percentage uncertainty if the energy is measure from the ground state
an ideal gas with temperature independent Cp = (7/2)R at 15 degrees C and having initial volume 60 m^3 is heated at constant pressure (P =0.1013 MPa) to 30 degrees by transfer of heat from a resivoir at 50 degrees C.
Write the equation for a nonspontaneous reduction-oxidation reaction involving the transfer
Determine which is the limiting reagent and how many grams of excess reagent remain unreacted. Calculate the theoretical yield of the reaction
How many joules of heat are required to heat 143 g of aluminum from 55.0 oC to 66.5oC?
Nickel has a face-centered cubic unit cell. The density of nickel is 6.84 g/cm3. Calculate a value for the atomic radius of nickel.
How many moles of calcium oxalate are present in the kidney stone? If this kidney stone is entirely calcium oxalate, what is the mass of the stone
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