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a typical american family uses 600 kwh of electricity a monthwhat is the average current in the 120 v power line to the
the question reads a solution containing 50g of each glycerol and h2o and the water has a density of 110 gmlcalculate
100 ml of 1 m acetic acid pka 476 are placed in a flask what is the ph if 2ml of 1 m koh are added and the total volume
magnesium oxide decomposes into magnesium and oxygen if 403 g of magnesium oxide decomposes to form 243 g of magnesium
a uniform meter stick is in static rotational equilibrium when a mass of 220g is suspended from the 50-cm mark a mass
write the complete ionic and net ionic equations for the reactions that occur when the following are mixed use the
the electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 160
for the infinite square well problem an electron spends 40 of its time in the n3 state and 60 of its time in the n5
what are the functions of the natural what are the functions of the natural
table salt contains 3999g of sodium per 100 g of salt the us fda recommends that adults consume less than 240 g of
each second 5525 m3 of water flows over the 670-m-wide cliff of the horseshoe falls portion of niagara falls the water
an iceberg floating in seawater as shown below in figure is extremely dangerous because much of the ice is below the
when 205 grams of aluminum metal are dropped in 650 ml of 60 m hydrochloric acid how many liters of gas are evolved at
suppose a rocket ship in deep space moves with constant acceleration equal to 980 ms2 which gives the illusion of
astrophysicists in the 1960s tried to explain the existence and the structure of pulsars - extremely regular
assuming the earths magnetic field averages about 05010-4 t near the surface of the earth estimate the total energy
a ball is dropped from a boat so that it striks the surface of a lake iwth a speed of 165 fts ball experiences
lead metal can be extracted from a mineral called galena which contains 866 lead mass a particular ore contains 685
you are given 500ml of a solution at ph 70 containing an unknown concentration of atp for which e- the molar
consider an electron for a hydrogen atom in an excited state the maximum wavelength of electromagnetic radiation that
what volume of glacial acetic acid d 106 gml and what weight of solid potassium acetate are required to prepare 5
pure water containing no arsenic was spiked with 40micrograms arsenatel seven replicate determination gave 39 40 39 41
the half-life of u238 is 45x109 years how many disintegrations occur in 1 minute for a 10 mg sample of this
at 20 degree c the vapor pressure of c2h5oh ethyl alcohol is 439 torr the vapor pressure of water at this temperature