Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
does the force constant of a spring changes if it is cut into parts ans force constant does not change because it is a
your dog is running around the grass in your back yard he undergoes successive displacements 350 m south 820 m northeast and 150 m west what is the
an object is thrown at 25 ms at 39 degrees above the horizontal from a 40m tall cliff how long is it in the
1 turbulent blood flow in anaemic patients is not uncommon what blood flow parameters should this turbulence be attributed to and why2 using
1 a protein with a density of 141 gcm3 has a molecular weight of 5000 gmola calculate its radiusb the radius measured during an experiment turned
1 describe the process of diffusion in cells not more than 2 pages 2 derive the equation for ficks second law3 draw a typical frap
a car of mass 800kg is pulling a trailer 300kg where sin a1200resistance to motionapart from gravity is 15n per kg of mad for each vehiclecalculate
a chemical reaction is known to occur spontaneously under standard conditions which of the following statements isare true more than one answer may
a solid substance has a molar volume which is smaller than that of its liquid phase which of the following statements regarding the solid-liquid
hydrogenation reactions are facilitated by the use of a transition metal catalyst such as ni or pt predict the signs of deltah deltas and deltag when
in the following dissociation reaction a2 g is 427 dissociated at equilibrium at 648oc and 1 bar pressurea2 g harr 2acalculate drgofor this
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
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