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the reaction between iron iii oxide and aluminum to produce aluminum oxide and iron has a heat of reaction deltah equal
a man lifts a 27-kg stone vertically with his hand at a constant upward acceleration of 17 ms2 what is the magnitude of
the reaction between sodium metal and chlorine gas produces 822 kj of heat energy for chlorine molecule consumed 2 na s
a light bulb is connected to a 1200-v wall socket the current in the bulb depends on the time t according to the
1 if a mixture of argon and xenon have total pressure of 870 torr and the pressure of the argon is 539 torr what would
a man swimming at 3 ms crosses a river flowing east at 1 ms the river is 300 m wide the man want to reach at point 50 m
the sled 100kg rides on a slope 30 degrees to the horizontal the coefficient of friction is 08 what force parallel to
a standing wave on a string is produced when one end is fixed and the other is driven by a 76 hz oscillator four and
a gas at 550 torr and 12 liters is allowed to expand to 43 l what is the final pressure of the gas in mmhg or
temperatures are often measured with electrical resistance thermometers suppose that the resistance of such a
calculate the capacitance per unit length of an axon of radius 45 microm the membrane acts as an insulator between the
a sytrofoam cup calorimeter is calibrated by adding heat to the water in it with an electrical heater when 1350j of
a parallel plate capacitor of capacitance 49 microf has the space between the plates filled with a slab of glass with
the reaction between nitrogen and oxygen gases requires the absorpotion of 43 kj of energy per mole of nitrogen
1 how many grams of salt would be in 1400 ml of a 105wtvol solution of the salt2 what would be pmm concentration of a
in an experiment on standing waves a mechanical vibrator drives a string both ends of the string are fixed the distance
the three-toed sloth is the slowest moving land mammal on the ground the sloth moves at an average speed of 0030 ms
a 032-mol amount of nh3 is dissolved in 047l of a 038 m silver nitrate solution calculate the equilibrium concentration
a circuit consists of a 120- battery connected to three resistors 40 16 and 120 in seriespart a find the current that
a magnetic field can force a charged particle to move in a circular path suppose that an electron moving in a circle
a 100 ml sample of household ammonia solution required 1815 ml of 0320 m hci to reach neutralization calculatea the
your toaster has a power cord with a resistance of 22times102 connected in series with a 99 nichrome heating element
if your given a 10l sample of water from a persons property who thinks there may be a significant level of pesticide in
a catapult on a cliff launches a large round rock towards a ship on the ocean below the rock leaves the catapult from a