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explain in preparing soap you dissolved 125 grams of sodium hydroxide in 32 ml of de-ionized water the product was a
a 71-kilogram person stands on a bathroom scale in an elevator find what does the scale read if the elevator is
two masses m1 20 kg and m2 24 kg are connected by a rope that hangs over a pulley the pulley is a uniform solid
a mono methyl-substituted 1-naphthol is permitted to couple with a diazonium prepared from a mono-substituted
a piece of wood density 012 gcm3 with a mass of 30 gram in air is affixed to a lead sinker with a mass of 400 gram
a ship displaces 300103 m3 of fresh water on a river when is passes out to sea find what volume of sea water will it
find out the lime and soda in mgl as caco3 to soften the subsequent water to a final hardness of less than 90 mgl as
a rock is thrown down a well that is 885 meter deep the splash is heard 120 sec later evaluate how deep is the
state the balanced net ionic equation for the reaction that takes place when 01 m solutions of potassium sulfide and
explain what are the major species of potassium hexacyano-ferrate iii when dissolved in water define what are the two
a wave travels along a stretched string the vertical distance from crest to trough for this wave is 15 centimeter and
a 100 turn coil has a radius of 32 centimeter and a resistance of 25omegaa the coil is in a uniform magnetic field that
explain acetone is a good extraction solvent for plant pigments as it breaks down cell walls and is miscible with the
intended for the skeletal chemical equation c2 h4g o2g co2 g h2og define what is the coefficient of c2h4 in the
a 110 kilogram horizontal beam is supported at each end a 320 kilogram piano rests a quarter of the way from one end
a baseball is being caught its speed goes from 90 to 0kmhr in about 0005 kilograma determine the baseballs
explain how many possible trisubstituted derivatives c6h3x2y can be obtained from the para disubstituted benzene c6h4x2
a friend in a spaceship travels past you at a high speed he tells you that his ship is 23 meter long and that the
the aerosol containers can be dangerous if they are heated because they can explode assume a container of hair spray
a man stands on a scale inside an elevator at rest the scale reads 800 na determine what is the man massb the elevator
a bike and rider have a total mass equal to 200 kilogram the rider applies the brakes causing the bike to accelerate at
suppose an unknown hydrate acxh2o has a mass of 1555g before heating and a mass of 994g after heating define what is
a string trimmer is a tool for cutting weeds and grass it utilizes a length of nylon string that rotates about an axis
if liquid oxygen is stored as saturated liquid at its normal boiling point find what is the enthalpy change per mole of
explain a common industrial unit for expressing the concentration of hydrogen peroxide is to state the relative volume