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a child sitting at the edge of a swimming pool sees a coin resting on the bottom of the pool the coin appears to be 20
how does concentrated h2so4 catalyze the esterfication reaction of ethanol and acetic acid to form ethyl acetate
going off of what our teacher was saying about the concept that a systems attempt to establish equillibrium is the true
ammonia gas and hydrochloric acid vapor undergo a reaction to produce solid ammonium chloride the reaction equation is
nitrogen monoxide reacts with hydrogen gas to form nitrogen gas and water vapor write a balanced equation for this
you want to visit your friend ford prefect who lives in the vicinity of betelgeuse 425 light-years from earth that is
write the overall cell reaction for the galvanic cell given below- ptshaqcl2gcl-aqptspts h2g cl-aq--gt pts 2 haq 2
the wavelength of red light emitted by a 301-mw helium-neon laser is 626 nm if the diameter of the laser beam is 111 mm
the motor of a scout rocket uses up all the fuel and stops when the rocket is at an altitude of 200 km above the
a solution may contain the following ions ag cu2 cd2 mn2 ni2 and na a white precipitate formed when 010 m nacl was
the andromeda galaxy is at a distance of 21 x 1022 m from our galaxy the mass of andromeda is 6 x 1041 kg and the mass
free neutrons unlike those in the nucleus of an atom decay spontaneously into a proton an electron and an antineutrino
a spaceship approaching an asteroid at a speed of 06c launches a scout rocket with speed 04c at what speed is the scout
draw a reaction profile diagram of energy vs reaction coordinate for a hypothetical reaction ab c lt--gt a bc in
from her police car running at 70 mih officer k sends a radar signal of a 285 mm wavelength to an suv in front of her
when certain light rays pass from a vacuum into a block of an unknown material the measured index of refraction of the
at room temperature about 20 degrees celsius milk turns sour in about 64 hours in a refrigerator at 3 degrees celsius
using the value of 73 kcalmole for atp how many kcal are conserved as atp from one mole of glucose in each of the
a tornado siren emits 3000 w of sound power radialy equal in all directionsa what si the intensity of sound 400 m from
at 450 deg celcius 360 mol of ammonia is placed in a 200 l vessel and allowed to decompose to the elements2nh3g---gt
a block slides down a friction less incline ramp if the ramp angle is 150 deg and the length of it is 190 m find the
a bullet of mass 001 kg moving horizontally strikes a block of wood of mass 15 kg which is suspended as a pendulum the
your friend brings you a 150 m sample of honh3cl and wants yo know the ph you politely ask for the ka of the acid and
the sedimentation coefficient of a certain dna in 1m nacl at 20c was measured by boundary sedimentation at 24630 rpm
draw a concentration cell for 010 m cu2 and 20 m cu2 cell show the following on each compartment clearlya all the