Estimating the speed of the proton
A proton in a linear accelerator has a de Broglie wavelength of 138 pm. What is the speed of the proton?
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Calculate the standard reaction enthalpy for the formation of boron trifluoride, which is widely used in the chemical industry:B2O3(s) + 3CaF2(s) > 2BF3(g) + 3CaO(s).The standard enthalpy of formation for BF3 is -1137 kJ/mol, for CaO -635.09 kJ
A 0.0050 molar solution of sugar is separated from pure water by a membrane at 20C. What is the osmotic pressure?
At a certain temperature and pressure 2.8 L of N2 reacts with 4.2 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced.
Calculate the k value associated with the reaction at 25 degrees celcius given the Gibbs free energy of formation of N2H4 is -419.15Kj/mol.
how many grams of lead chromate form when a 1.00g sample of Pb(NO3)2 is added to 25.0 mL of 1.00 M K2CrO4 solution.
2CH3OH+3O2 gives 2CO2+4H2O. Calculate the heat of combustion of one mole of methanol under standard conditions.
Acetylene gas (C2Hs) is produced as a result of the reaction CaC2(S)+2H2O(l)-> C2H2(g)+Ca(OH)2(aq). if 27g of CaC2 are consumed in this reaction, how much H2O is needed?
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