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consider the reaction 2 hcl caoh2nbsprarrnbsp2 h2onbsp cacl2calculate the amount of the excess reagent in moles when
technetium-99m is a radioactive isotope prized for its utility in medical diagnostics this isotope has a half-life of
part 1 one assumption we make in kinetic molecular theory is that gas particles have no volume but still have mass and
what physicalchemical properties allowed you to separate and confirm lead ii mercury i and silver i explain your answer
how does the molecular orbital model help us understand the shape electrons make when
dissolving calcium hydroxide in water is an exothermic process delta h -162kjmol calculate the mass of calcium
why is dissolved oxygen an important water quality parameter are higher or lower values better for water quality what
how tall in cm is a cylinder of lead if its density is 1134 gcm3 it has a mass of 1898 kilograms and the diameter of
which reactant is limiting if free elements of iodine 282 grams and fluorine 154 grams react to make iodine
rank the electrons by relative energy within an atom of mercuryi 5 0 0 frac12ii an electron in a 4d subshelliii 4 0 0
calculate the mass per liter of solid lead ii phosphate kspnbsp 100 x 10-54 that should dissolve in 0770 m lead ii
what is the enthalpy of formation of the substances given the change in enthalpy of reactionnbspassign whether the
calculate the ph at the following points in the titration of 360 ml of 0050 m benzoic acid ka 63x10-5 with 003 m naoh
what is the enthalpy of formation for the substances given the thermochemical reactions assign whether the process is
what wavelength in nm of light must be absorbed by a photon to be excited from the n2 to the n4 energy
what is the energy and frequency of a beam of light with a wavelength of 15x10-6
in the following reactionnbspmg 2hclnbsprarr mgcl2nbsp h2how many liters of h2nbspwould be produced if you started
do you think there is a point at which volume cannot be decreased any further for this sealed container of gas explain
our lab for this unit investigated factors that influence the speed at which solute dissolvesnbspthe speed of
if all of the energy from the beta decay of the 14c in a 6000 kg african bush elephant could be captured and converted
a 250 mg sample of co2nbspcollected from a small piece of wood at an archaeological site gave 1020 counts over a 24 h
1 acetic acid ch3cooh is one of the simplest carboxylic acids it is an important chemical reagent and industrial
most mixtures of hydrogen gas with oxygen gas are explosive however a mixture that contains less than 30 o2 is not if
consider the dissolving of lead iodide pbi2nbspsnbsprarrlarrnbsppb2nbspaq 2 i-nbspaq the solubility of lead iodide
questions -q1 predict the major products of each of the following reactions show stereochemistry where importantq2