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How much heat is required to raise one mole of He gas by 10 K if (a) the gas is confined to a sealed container and (b) the gas is confined by a piston, the external pressure being 10 atm. Also, calculate the work done by the gas in each case. For He, Cp= 20.79 J/K/mol and Cv= 12.38 J/K/mol, which may be taken as independent of temperature.
A filtration could be very time consuming if it were not aided by a gentle suction which is developed by:
Evaluate the electronic configuration for ionization energies of Magnesium, the orbital number in which the electrons are added in phosphorus ion, and the one will lose in the ionization of Alluminium.
Determine how many moles of carbon dioxide should be combined to the system to bring the equilibrium carbon monoxide concentration to 0.715 mol/L?
A gas mixture contains 1.30g N2 and 0.95g O2 in a 1.57-L container at 22 degrees Celsius. Calculate the mole fraction of N2.
How many grams of ammonia can be produced ? How much of the excess reactant is left over?
Rank the following bonds according to increasing polarity.
A 15ml aliquot of this solution was the diluted to 500ml of water. Calculate the final molarity
At 2000 degrees Celsius the equilibrium constant for the reaction 2NO (g) N2 (g) + O2 (g) is Kc=2.4x10^3 The initial concentration of NO is 0.174 M
Elemental exonium (not a real element) consists of two major isotopes Abundance Mass 55% 98 amu, 45% 114 amu What is the atomic weight for exonium? Answer in units of amu
It takes 50.0J to raise the temperature of an 12.0g piece of unknown metal from 13.0 C to 24.0 C. What is the specific heat for the metal?
calculate the solubility (in mol/liter) of Al(OH)3 in a solution
Which statement best desrcibes the energy change as bonds are formed and broken in this reaction ?
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