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an element exists in two solid phases labelled p1 and p2the standard molar entropies of p1 and p2 are219j mol-1 k-1 and 233j mol-1 k-1
the vapour pressure of a substance at 200oc is 381 kpa and its enthalpy of vaporisation is 496 kj mol-1 estimate the temperature at which
under standard state conditions at 37 oc a biochemical reaction a harr b chas an equilibrium
2 moles of an ideal gas expand isothermally and reversibly from 500 dm3 to 978 dm3 at a temperature of 637oci calculate the entropy change for
61 moles of steam at 100 oc are condensed at 100 oc and the resulting water is cooled to 471 oc calculate the entropy change for this processthe
in the following experiment a constant-pressure calorimeter containing 100 ml of h2o is used the initial temperature of the calorimeter is 246oc if
99 ml of h2o is initially at room temperature 200oc a chilled steel rod at 20oc is placed in the water if the final temperature of the system is
it takes 460 j to raise the temperature of an 101g piece of unknown substance from 130octo 401oc what is the specific heat for the
a using the thermochemical tables provided calculate the standard molar enthalpy of combustion at 298 k for the following hydrocarbon c c2h4 g
calculate the heat required to melt 3167kg of potassium metal at 336 k the enthalpy of fusion of potassium is 235 kj
the molar heat capacity of a gas at constant pressure is 187j mol-1 k-1 what is the heat capacity of 94 moles of this gas at constant
a strip of aluminium of mass 407g is dropped into a beaker of dilute hydrochloric acid calculate the work done in j on the surrounding atmosphere
a sample of argon of mass 104 g occupies 2100 ml at 30 oc i calculate the work done by the gas when it expands isothermally against a constant
disinfection of water streams originating from potable water plants is key in protecting environmental health describe the process design and
1 krusty the clown and sideshow bob have covered themselves in velcro and shot themselves out of a large cannon so that they stick to a huge rotating
a what strategies would you offer to the nurse manager to improve the situation of the unitb what leadership style would produce the most favorable
1 a given a digraph g ve prove that if we add a constant k to the length of every arc coming out from the root node r the shortest path tree
demonstrate that dijkstras algorithm does not necessarily work if some of the costs are negative by finding a digraph with negative costs but no
1 let g ve be a graph for which all nodes have degree 5 and where g is 5-edge is connecteda show that the vector x which is indexed by the edges
the current is an rl circuit drops from 11 a to 13 ma in the first second following removal of the battery from the circuit if l is 12h find the
the current in an rl circuit builds up one-third of its steady value in 456s find the inductive time
a circular coil has a 128cm radius and consists of 290 closely wound turns of wire an externally produced magnetic field of magnitude 223 mt is
a long solenoid has a diameter of 104cm when a current i exists in its windings a uniform magnetic field of magnitude b377 mt is produced in its
a 240-turn solenoid having a length of 21 cm and a diameter of 88 cm carries a current of 044a calculate the magnitude of the magnetic field inside
a toroid having a square cross-section 548cm on the side and an inner radius of 194cm 450 turns and carries a current of 104a it is made up of a