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calculate the amount of heat in kj needed to convert 150 g of ice at -21 c to liquid water at 75 cspecific heat of ice
a skier starts from rest at the top of a frictionless incline of height 200 m as shown in the figure as the bottom of
on a frozen pond a 9 kg sled is given a kick that imparts to it an initial speed of v0 25 ms the coefficient of
air is about 780 nitrogen molecules and 210 oxygen molecules several other gases make up the remaining 1 of air
ammonia gas is produced by reacting hydrogen gas with nitrogen gas to produce 856 g of ammonia gas using air as your
a 600-kg projectile is fired at an angle of 300deg above the horizontal with an initial speed of 136 102 ms from the
a 750 ml volume of 0200 m nh3 ksp18 10-5 is titrated with 0500 m hno3 calculate the ph after the addition of 230 ml of
a 50 kg crate slides down a 600 incline with an acceleration of 19 ms2 what is the frictional force between the crate
the mass percent of glucosec6h12o6 in human blood is 0102 the density of human blood 37 c is 108 kgl assume the
a 1050 kg car is traveling at a speed of 25 ms when the driver sees that there is a tree across the road if the car has
a gold nucleus is located at the origin of coordiantes and an electron is brought to a position 2 angstrom from the
a 150 g block with a charge of 600 10-5 c is placed in an electric field 3000 - 600 nca what is the electrostatic
what is the electron-pushing mechanism for the aldol condensation reaction of benzaldehyde and acetone forming
a converging lens of focal length 8020 cm is 203 cm to the left of a diverging lens of focal length -647 cm a coin is
at a prominent state hospital a 45-year-old woman is receiving a lsquocombined modality treatment for the initial stage
ammonia gas is produced by reacting hydrogen gas with nitrogen gas to produce 450 g of ammonia gas using air as your
a 05236 gram sample of an unknown monoprotic acid was titrated with 994times10-2 m naoh the equivalence point of the
a car is driving directly north on the freeway at a speed of 118 kmh and a truck is leaving the freeway driving 89 kmh
when a 100 l flask containing 0500 atm of gas a is joined with a 200 l flask containing 0850 atm of gas b and the
a loop of diameter d 10 cm carrying a current i 02 a is placed inside a magnetic field 03 t the normal to the loop
as observed on earth a certain type of bacterium is known to double in number every 6 hours two cultures of these
the heat of fusion of acetic acid is 115 kjmol its melting point is 166 c the change in entropy for the melting of
a physics book slides off a horizontal tabletop with a speed of 230 ms it strikes the floor in 0350 s ignore air
at the boiling point of benzene delta hvap3078 kjmol and delta svap8715 jmol k determine the normal boiling
a 11 kg box must be slid across the floor if the coefficient of static friction between the box and floor is 037 what