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Describe, in detail, how you would separate a mixture of ammonium chloride, NaCl, and sand. Will you be using chemical methods? Explain.
relation between the energy of emitted alpha particles and the half-life for the radioactive decay.
if two atoms of element A react with three atoms of element B, what is the chemical formula for the resulting compound
Don't worry about the concentrations of reagents or the colors resulting precipitates (if any). You don't have to precipitate all ions, just separate them
What is the technique for securing a piece of filter paper into a Buchner funnel for vaccum filtration? c) The alum crystals are washed of contaminants with an alcohol-water mixture rather than with deionized water. Explain.
Determine the angle for the first-order diffraction of xrays with lambda=362 pm, reflected from planes in mica (a silicate mineral) separated by 997 pm
A solution is prepared by mixing 50.0 mL of 0.50 M Cu(NO3)2 with 50.0 mL of 0.50 M Co(NO3)2. Sodium hydroxide is added to the mixture. Which hydroxide precipitates first and what concentration of hydroxide ions present in solution will accomplish th..
An analytical procedure requires a solution of chloride ions. how many grams of caCl2 must be dissolved to make 2.15 L of 0.0520 M Cl-.
Provide the proper IUPAC name for the alkenes shown below. CH2=CHCH2CH2CH2CH3. Choose your answere from the following (a) A hex-1-ene (b) hex-2-ene (c) hex-3-ene
what is the mass, in kilograms, of Avogadro's number of olympic shot put balls if each one has a mass of 16lb? How does this compare with the mass of Earth, 5.98x10^25 kg.
Substitution and elimination reactions are competing reactions. Under what conditions can you ensure that substitution will predominate
How many grams of NaCl would be formed from 100 grams of Na2CO3 in the following reaction? Na2CO3 + 2 HCl ? 2 NaCl + CO2 + H2O
Construct a Beer†TM s Law plot and determine concentration of a solution X. When a 1 ml sample of solution X was combined with 4 mL of distilled water it had an Absorbance of 0.19.
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