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if a solution of kbr mm11901 gmol has a concentration of 25 m and a solution density of 105 gml what is the mass of
at 368100017 khz the reactance in a circuit of a 9 microf capacitor and an inductor are equal in magnitude what is the
a 500-l reaction vessel contains 100 mol n2 300 mol h2 and 0500 mol nh3 will more ammonia nh3 be formed or will it
a cube of ice is taken from the freezer at -95degc and placed in a 105 g aluminum calorimeter filled with 323 g of
during exercise a person may give off 182 kcal of heat in 30 min by evaporation of water from the skin how much water
1 why does a soluble impurity reduce the melting-point range of a pure compound2 why is it advisable to run a mixed
a rainbow viewed from an airplane may form a complete circle where will the shadow of the airplane appear
calculate the maximum number of moles and grams of h2s that can form when 195 g aluminum sulfide reacts with 106 g
an unknown compound b has the melting point 1125-114 degrees c it is suspected that b is either x or a each compound
a solid object is made of two materials one material having density of 2 000 kgm3 and the other having density of 6 000
the tungsten filament of a light bulb has an operating temperature of about 2 100 k if the emitting area of the
many metals react with oxygen gas to form the metal oxide for example calcium reacts in the following manner 2 cas o2g
assuming that the gas is ideal calculate the work required to compress ar gas from 10l to 1l the gas is initially at 25
an unknown compound a has a melting point 123 degreesc-124 degreesc it is thought that z is either breported 122
a cannon fires a cannon ball at 99916 ms in a straight line that passes directly over an observers head if the observer
a carbohydrate is a compound composed solely of carbon hydrogen and oxygen when 77467 g of an unknown carbohydrate
a perfect gas undergoes an expansion process at constant pressure does its internal energy increase decrease or stay
the density of potassium which has the bbc structure and one atom per lattice point is 0855 gcm3 the atomic weight of
carbon dioxide is heated in a constant pressure process from 15c and 1013kpa to 86c determine per unit mass the changes
write the structure of the product formed by treating montelukast with one equivalent of sodium hydroxide write the
suppose fuzzy a quantum-mechanical duck lives in a world in which h 2j middot s fuzzy has a mass of 205 kg and is
two methods were used to analyze the amount of au in gold ore a normal fire assay of 8 samples indicated of 156 where
a room with 30-m high ceilings has a metal plate on the floorwith v0v and a separate metal plate on the ceiling a 10
calculate the volume in l of ethylene glycol in a radiator that contains 2170 g ethylene glycol the density of ethylene
two heat reservoirs at temperatures 165degc and 60degc respectively are brought into thermal contact and 150 103 j of