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what is the change in internal energy in j of a system that absorbs 603 kj of heat from its surroundings and has 470
the most common isotope of a single nucleus stripped of its electrons is accelerated from rest through a potential
a ball of mass 040 kg has a kinetic energy of 288 j what is the magnitude of the linear momentum of the
if the concentration of lead iodide pbi2 in a saturated aqueous solution is 15 x 10-3 m what is the ksp of
you are climbing up stairs gaining 10 meters of height per minute in order to do that your body has to do some work
what is the ph of an aqueous solution prepared by dissolving 0370 moles of formic acid hco2h and 230 moles of sodium
how many helium-filled balloons would it take to lift a person assume the person has a mass of 80kg and that each
a 250 ml sample of an hcl solution is titrated with a 0139 m naoh solution the equivalence point is reached when 154 ml
what mass of copper in g can be deposited by the passage of 10 a for 40 hr through a solution of
a solution is exposed to air where the partial pressure of n2 is 080 atm and the concentration of n2 in solution is
a transformer with 120 turns in its secondary supplies 12 volts at 220 ma to a toy train the primary is connected
a 1200 turn coil in a dc motor has an area per turn of 22 10-2m-2 the design for the motor specifies that the
the poh of a solution containing 030 m of a weak base is 392 what is kb for the
the non-constant angular acceleration of a wheel is given by atat a6 radianss3 at t100second the wheels angular
what mass of ar gas in g is contained in a 640 l tank in which its pressure is 0703 atm and the temperature is 640degc
an air-filled suppose k1 parallel-plate capacitor has plates of area 230 cm2 separated by 150 mma find the value of its
a copper cylinder and a brass cylinder are stacked end to end as in the drawing each cylinder has a radius of 029 cm a
what is the freezing point in degrees celcius of a solution prepared by dissolving 113 g of cano32 in 115g of water the
outline the way in which the health and safety at work act hasaw act 1974 controls work place health and safety compare
a painter wishes to know whether or not he can safely stand on aladder the ladder has a mass m1 50 kg which
two unknowns x and y both having the molecular formula c4h8o give the following results with four chemical tests
a converging lens f1 240 cm is located 560 cm to the left of a diverging lens f2 280 cm an object is placed to the
the problem gives you- 1-bromo-1-methylcyclohexane and the product is cyclohexanone you have to use two reagents or
the surface charge density on an infinite sheet is -20 x 10-6 coulomb an alpha particle is shot away from the plane at