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the standard enthalpy of formation of nh3 is -46 kjmol use this and values for the ntriple bondn and h-h bond energies
a reaction rate triples when the temperature increases from 15 oc to 35 oc maintaining everything else equal what is
given that 39 moles of carbon monoxide gas are present in a container of volume 145 l what is the pressure of the gas
it is possible to determine the ionization energy for hydrogen using the bohr equation calculate the ionization energy
a heat pump is used to maintain a house at a constant temperature of 23 deg c the house is losing heat to the outside
a household refrigerator with a cop of 12 removes heat from the refrigerated space at a rate of 60 kjmin determine the
a 036 m sodium chlorobenzoate nac7h4clo2 solution has a ph of 878 calculate the ph of a 036 m chlorobenzoic acid
when table sugar is burned in air carbon dioxide and water vapor are products as shown by the following unbalanced
given that 59 moles of carbon monoxide gas are present in a container of volume 637 l what is the pressure of the gas
suppose that 0263g of naco3 required 3835ml of aqueous hcl for titration to the equivalence point what is the molar
elemental analysis is performed on an organic liquid with a fishy odor vaporization of 2650 mg of the compound in a
a a sample of air was compressed to a volume of 270 l the temperature was 2970 k and the pressure was 870 atm how many
compare the heat needed to raise the temperature of 1 cup 250 ml of water and coffee urn with 10 gallons 38 liters of
a mouse is placed in a sealed chamber with air at 7610 torr this chamber is equipped with enough solid koh to absorb
draw a structural formula of an alkene or alkenes if more than one that undergo acid-catalyzed hydration and without
the two alkenes below react with hi at different rates draw the structural formula of the major product formed by the
a sample of air was compressed to a volume of 270 l the temperature was 2970 k and the pressure was 870 atm how many
given that 190 moles of carbon monoxide gas are present in a container of volume 336 l what is the pressure of the gas
a system expands from 100 l to 200 l against a constant external pressure of 100 atm what is the work w done by the
a 322 g iron rod initially at 230 c is submerged into an unknown mass of water at 630 c in an insulated container the
when 1 mol of a fuel is burned at constant pressure it produces 3455 kj of heat and does 10 kj of workwhat is the value
how much heat is required to warm 140l of water from 220 c to 1000 c assume a density of 10 gml for the
1 a student performs two melting point determinations on a crystalline product in one determination the capillary tube
a gas expands from 360 ml to 971 ml at constant temperature calculate the work done in joules by the gas if it expands
consider crystallization of sulfanilamide in which 10ml of hot 95 ethanol is added to 010g of impure sulfanilamide