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a 5000 w electric heater is used for 32 hours calculate the energy consumed in this period the plates are seperated by
what is the volume of 250 g of methylene chloride and what is the mass of 3980 mmol of benzene
a speedboat moves on a lake with initial velocity vector v1x 927 ms and v1y -217 ms then accelerates for 533 seconds
what is the molar concentration of an aqueous solution whose total volume is 1500 ml if the solution contains 03512 mol
how does the possession of double membranes by chloroplasts andmitochondria relate to the endosymbiosis theory of the
given a sample of a gas at 27 degrees celsius at what temperature would the volume of the gas sample be doubled the
an artery can be constricted from arteriosclerosis or by the inflation of a cuff of to measure your blood pressure the
during 809 seconds a motorcyclist changes his velocity from v1x -351 ms and v1y 137 ms to v2x -247 ms and v2y 265 ms
1-butanol and chlorobenzene form a minimum boiling point azeotropic system the mole fraction of 1-butanol in the liquid
at the surface of an electrically charged solid conducting sphere the electric field has a magnitude of 458 nc and the
a 108 microf capacitor is connected in series with a 218 microf capacitor the 108 microf capacitor carries a charge of
a house is designed to have passive solar energy features brickwork incorporated into the interior of the house acts as
a 150-kg block of ice at 0 degc melts to liquid water at 0 degc inside a large room that has a temperature of 200degc
butyric acid hc4h7o2 has a ka of 151 x 10-5 calculate the ph of a solution of butyric acid where 152 g of the acid was
what will be the phenotypic ratio of an f1 cross of fliescarrying two mutations ifa the mutations are linked in
batteries are rated in terms of ampere-hours a middot h for example a battery that can produce a current of 200 a for
when 40 ml of 0500 m hcl is titrated with 0600 m naoh the ph increases what is the ph of the solution after 33 ml of
1 how does polarity affect the diffusion of a substance if the substance is more polar then it diffuses faster through
a 140-w lightbulb connected to a 120-v source experiences a voltage surge that produces 135 v for a moment by what
1 11 ml of 00100 m hcl are added to 250 ml of a buffer solution that is 0010 m hc2h3o2 and 011 m c2h3o2- what is the ph
a lightbulb has a resistance of 170 when operating with a potential difference of 110 v across it what is the current
how does this experiment mimic a natural ecosystem whatthings are different this experiment was on mimicking the
1 in your own words define the term ldquodilution seriesrdquo explain how a dilution series is utilized2 in your own
the quantity of charge q in coulombs that has passed through a surface of area 205 cm2 varies with time according to
calculate the concentration of naoh if 25 ml of the solution is needed to neutralize 189 ml of 237 m