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the ld for a drug is the dose that would be fatal for 50 of the population the ld for aspirin in rats is 175 grams per
a foundry liberate 60 tons us tons of gas into the atmosphere every day the gas mixture includes 25 sulfur dioxide so2
a recipe for onion to serve 30 people needs 42 pounds of onions arrange the dinner party for 18 people explain how many
a solution containing 805g of c6h8o6 dissolved in 210g of water has a density of 122 gml at 55 c state the
ethyl alcohol is organized industrially by the reaction of ethylene c2h4 with water explain what is the percent yield
1 presume 1087g of magnesium is heated in air explain what is the theoretical amount of magnesium oxide that must be
an unknown oxide of mercury decomposes while heated to form mercury metal and oxygen gas while a 1048 g sample of this
state a detailed mechanism for the electrophilic addition of hbr to 1-butene using the usual conventions explain the
two half cells in a galvanic cell consist of one iron fe solid electrode in a solution of iron ii sulphate feso4 aq as
presume a solution was too concentrated for an accurate reading with the spectrophotometer the concentrated solution
1 explain what is the temperature in k of an ideal gas where p 617torr n 00118 mol and v 15881 ml2 if oxygen gas is
explain simple chemical tests to distinguish between the compounds in each of the subsequent pairs explain exactly what
you are designing a system to control the water transport in the fuel cell a stream of air with a flow rate of 10 lmin
if one starts with five grams of acryl amide and forms a gel explain what would be the molecular weight of the polymer
a gas absorption unit is being utilized to remove carbon dioxide from air by absorption into water the mole fraction of
explain when heated calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the
explain what is the formula of a compound that contains hydrogen as 1 sulfur as 4 and oxygen as -2 define how to do
using reaction equations illustrate how would synthesize each of the subsequent from the indicated starting materials
a current of 1000 a flows for exactly one hour through a cell in which the subsequent reaction occurs at one of the
provide simple chemical tests to distinguish the compounds in each of the subsequent sets explicate what you would
you are given very little samples of two amines a and b you are tell that one sample is 2-methyl-2-heptanamine as well
chlorine exists primarily as 37cl as well as 35cl and has an average atomic weight of 35453 the abundance of cl with
explain what mole ratio of molecular chlorine to molecular oxygen would result from the breakup of compound cl2o7 into
hydrochloric acid reacts with zinc metal to form zinc chloride and hydrogen gas explain if 3452 g of zinc metal reacts