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A sample of NAOH weighing 0.38g is dissolved in water and the solution is made to 50.0 cm3 in a vol. flask.
what is the molarity?
75.0 g of ammonium sulfate is placed in a 500.0 ml flask and diluted volume. What is the percent by mass concentration of this solution? (assume the solution density is 1.00 g/ml)
Identical hard spheres of radius R are packed together to form a simple cubic lattice. What is the ratio a/R, where a is the edge length of the unit cell
moist air exerts lower pressure and dry air exerts high pressure. how would the volume of the hydrogen gas that was ollectes been different if this eperiment was done on a very rainy day/ on a very dry day?
Calculate the enthalpy change, , for the process in which 41.5 of water is converted from liquid at 2.1 to vapor at 25.0.
A red laser pointer emits light with a wavelength of 660. What is the frequency of this light? 2.What is the energy of one of these photons?
A pure titanium cube has an edge length of 2.68 . How many titanium atoms does it contain. Titanium has a density of 4.50 g/cm3
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00. The Ka of HCN = 5.0 x 10-10.
Enough Al2(SO4)3 solid is added to water to prepare 100.0 mL of a 0.150 M solution of aluminum sulfate. What is the concentration of sulfate ion in solution?
Prepare (2R,3S)-2,3-dibromobutane (a meso compound) starting from a racemic mixture of (2S,3S)- and (2R,3R)-2,3-dibromobutane
Problem- Look up the structure of the following pesticides and show how they could interact with generic humic material. Atrazine, Fenitrothion, Chlorpyrifos, Chlordane, Chlorothalonil, Aldicarb, Malathion and Trifluralin
Benzene (C6H6) is a trace component of gasoline. What is the mole ratio of benzene to n-octane in the vapor above a solution of 35.0% benzene and 65.0% n-octane by mass at 25 degrees C
2 dimethylcyclohexanone starting with hydrocarbons, ketones or esters of 4 carbons or less, benzaldehyde, monosubstituted cyclic ketones and any inorganic reagent.
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