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problem- a calculate the mass defect of the helium nucleus 52he the mass of neutral 52he is given by mhe5012225ub
problem- a fossil was analyzed and determined to have a carbon-14 level that is 50 that of living organisms the
problem- what exactly does the 12 in 12 disubstituted mean i guess we can only use cis and trans when its 12
problem- americium-241 is used in some smoke detectors it is an alpha emitter with a half-life of 432 years how long
problem- an unknown radioactive substance has a half-life of 320hours if 426g of the substance is currently present
problem- electrolysis of molten nacl is done in a downs cell operating at 70 volts v and 40 x 104 a how much nas and
problem- if a current of 400 x 10-6 a is drawn from a solar cell for six months how many faradays are involvedwrite
problem- write out the mechanism for the synthesis of 2-iodobenzoic acid from 2-aminobenzoic acid show intermediate
problem- why are active on-duty firefighters likely to experience the adverse health effects from inhaling 300 ppm of
problem- calculate the final temperature when a 110 gram sample of ice at 0oc is placed into a styrofoam cup containing
problem- iodine -131 undergoes beta emission with half life of 802 daysnif you start with 443mg of materialhow long
a how many tons of coke are needed per week to produce 851times104 of pig iron from a modern blast furnace using
problem- calculate the molarity m of ca2 in a solution prepared by adding 4000 ml of 0800 m cano32 and 0250 l of 0100 m
problem- balance the following redox reaction in acidic solution and identify the reducing agent and the oxidizing
problem- in aqueous solution that is 1200 by mass arsenic acid h3aso4 has a density of 108 gml calculate the molarity
problem- a 0250 l volume of 0128 m nh4pf6 is condensed to a volume of 0100 l calculate the molarity m of nh4 in the new
problem- chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical
problem- toluene freezes at -950 c its freezing point depression constant is 333 cm calculate the freezing point of a
problem- when beryllium-9 is bombarded by alpha particles carbon-12 is produced write an equation to show what other
problem- the vapor pressure of pure toluene c7h8 is 40 torr at 318 c calculate the vapor pressure of a solution of 20
problem- a 20 by mass solution of phosphoric acid h3po4 in water has a density of 1114 gml at 20 c what is the molarity
problem- modifications of the polyol elastomer rubber-like formulations typically do not contain water why not show
problem- calculate the number of atps generated from one saturated 14-carbon fatty acid for this question assume that
problem- a sample of o2 gas is placed in a sealed 100 l flask and pressure is measured as temperature is changed the
problem- a standard solution containing 200 mgl of vitamin e fluoresces with 374 units a sample solution of vitamin e