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Mercury is a toxic heavy metal which is liquid at room temperature. To form HgBr2, mercury(II) bromide, a student reacts elemental bromine with elemental mercury. If the reaction vessel contains 104.833 g of Hg, and the student adds 7.911 g of bromine, has the student added enough bromine to completely react with the Hg? How much of the reactant that was not used up all the way is left?
World energy supplies are often measured in the unit of quadrillion British thermal units (10^12 Btu ), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 x 10^17Kj
Z- is a weak base. An aqueous solution of NaZ is prepared by dissolving 0.350 mol of NaZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 8.93 at 25.0 °C
At 295 K, Keq = 7.0 x 10-2 for the following equilibrium: NH4HS(s) ? NH3(g) + H2S(g) What is the equilibrium partial pressure (in atm) of H2S.
A tank contains helium for filling balloons. It holds 6.75 L of He at 49.6 atm and 25.1 °C. What would be the volume of this helium at 1.66 atm and 10.7 °C
calculate the atom economy and reaction efficiency of the synthesis of camphor to from isoborneol
How do i calculate the aveage current that flowed thorugh an electrolytic cell from the delta [OH-] (3.910), volume of the solution (30mL) and the time of electrolysis (15min)
Low-melting solids often "oil out" of a recrystallization solution rather than crystallizing. If this were to happen, how would you change the recrystallization procedure to ensure good crystals
An electron in the n=7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 93.1nm. What is the value of n for the level to which the electron relaxed
A chemistry student needs 60.00 mL of chloroform for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of chloroform is 1.48 g x cm^-3.
A pt has a blood Ca level of 4.6 mEq/L If 1mol Ca2+= Eq Ca2+ what is the blood calcium levle in mg/dl
the same retention but different selectivity as what precentage of mixtures for acetonitrile/water and tetrahydrofuran/water?
What statement below best describes the graph representing the integrated 1st order rate law plot of ln[a] vs t having a straight line negative slope equal to -k
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