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a battery of internal resistance r 02 and emf e 120 v if the battery is connected to a device of resistance 60 ohms
the solubility of benzoic acid in water is 680g per 100ml at 100 degrees c and 034 g per 100ml at 25 degrees ccalculate
what is the ph of a solution formed after titrating 25 ml of 0150 m acetic acid with 150 ml of 0150 m sodium hydroxide
a 30-cm object is placed 80 cm in front of a mirror the virtual image is 40 cm further from the mirror when the mirror
a 60-ft tall football player stands in front of a plane mirror how tall must the mirror be so that the football player
suppose you carry out a tlc separation of acetaminophen and phenacetin on silica gel using a nonpolar solvent which
a dime is placed in front of a concave mirror that has a radius of curvature r 015 m the image of the dime is inverted
calculate the ph of a solution prepared by mixing 150ml of 010m naoh and 300ml of 010m benzoic acid solution benzoic
what is the ph of a solution that is 075m in sodium acetate and 050m in acetic acid ka for acetic acid is
calculate the concentration of cr in equilibrium with croh4 when 01 mol of crno33 is dissolved in a liter of solution
a person on a safari wants to take a photograph of a hippopotamus from a distance of 751 m the animal is 435 m long and
a wire of resistance 54 is connected to a battery whose emf is 20 v and whose internal resistance is 10 in 18 min
silicon carbide is produced by heating silicone polymers forming methane gas hydrogen gas and silicon carbide balance
an electron moving in the positive x-direction passes through a slit of width y 955 nm what is the minimum uncertainty
the avg setting on an ultrasound machine for soft tissue treatment of muscle tissue is 15 wcm2 im trying to figure out
a converging lens has a focal length of 60cm a 11cm -high arrow is located 11cm from the lens with its lowest point
the lid is tightly sealed on a rigid flask containing 350l of h2 at 17 degrees c and 0913 qtm if the flask is heated to
three capacitors having capacitances of 83mu f 88mu f and 40mu f are connected in series across a 38-rm v potential
a draw the skeletal structure of the major organic product produced when 2-methylpropanoyl chloride reacts with
the body contains many small currents caused by the motion of ions in the organs and cells measurements of the magnetic
prepare an electrochemical cell by connecting the negative terminal of a voltmeter to a strip of zinc in a solution of
74 mol of helium are in a 16 l cylinder the pressure gauge on the cylinder reads 68 psi what area the temperature of
a sound source emits sounds of frequency 215 hz that travel through still air at 340 ms this sound source moves with a
the pka of the acid function at the 2-position is approximately 2 whereas that at the 1 position is about 3 which of