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what are the h3o and the ph of a propanoate buffer that consists of 047 m ch3ch2coona and 012 m ch3ch2cooh ka of
a nonreflective coating n 131 covers the glass n 152 of a camera lens assuming that the coating prevents reflection
in a series l-r-c circuit the components have the following values l 180 mh c 170 nf and r 380 ohms the generator
draw the structures of the ketones with the molecular formula c6h12o that have a four-carbon
a series circuit consists of an ac source of variable frequency a 150 ohm resistor a 155 uf capacitor and a 456 mh
what is the buffer-component concentration ratio no2- hno2 of a buffer that has a ph of 290 ka of hno2 71 x
during the design of a ski ramp for safety it was decided that a skier should have a speed of no more than 30 ms when
unpolarized light with an intensity of585w m2 is incident on a polarizer with an unknown axis the light then passes
the thermite reaction combines aluminum powder and iron oxide and ignites the mixture to make aluminum oxide and iron
a 200 m long rope is stretched between two supports with a tension that makes the speed of transverse waves 480 ms what
dentists might use a mixture of 40 n2o and 60 o2 as an initial anesthetic of nitrous oxidealthough exact proprtions may
unpolarized light of intensityi0is incident on three polarizing filters the axis of the first is vertical that of the
a 1 how many ml of boiling water are required to dissolve 2800g of phthalic acid 2 if the solution were cooled to 14
a electron enters a magnetic field of 03 t at an angle of 35 degree and with a speed of 500 e5 ms find the force on the
an aluminum cup contains 225 g of water and a 40 g copper stirrer all at 27degc a 490 g sample of silver at an initial
a 125g piece of metal is heated to 288c and dropped into 850g of water at 260c if the final temperature of the water
a series rcl circuit includes a resistance of 298 ohm an inductive reactance of 648 ohm and a capacitive reactance of
a 9 volt battery is connected in parallel with a 100 ohm 200 ohm and 500 ohm resistors find the total resistance in
with each cycle a 2510-w engine extracts 2070 j from a thermal reservoir at 90 degc and expels 1340 j into a thermal
a batter hits a fly ball which leaves the bat 088above the ground at an angle of 62 with an initial speed of 28 heading
a 10kg grindstone in the shape of a uniform cylinder of radius 025m acquires a rotational rate of 18 revs from rest
briefly explain how we modify the energy conservation equation when there is work dont by forces outside of our system
a small conductive rod of length 2 m moves with a constant velocity v17 ms in a direction parallel to a long wire
one commercial over the counter product consists of 5000 mg tablets that are 20 percent by mass vitamin c how many
a particle whose mass is 2 kg moves in the xy plane with a constant speed of 3 ms in the x direction along the line y