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You are given a liquid sample that contains either methanol (CH3OH), ethanol (CH3CH2OH), or a mixture of both. You use combustion analysis of a 0.336 g sample and obtain 0.462 g of CO2. What is the sample?
A piece of galena has a volume of 5.4 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
naturally occuring copper contains a miture of 69.09% copper-63 (62.9298 amu) and 30.91% copper-65 (64.9278 amu)
You have 20.00 mL HCl (aq) - you are able to reach equilibrium (at pH 7.00) through titration by adding 14.25 mL of 0.2030 M NaOH. What is the Molarity of the acid
what is the volume of 45.6g of silver if the density of silver is 10.5g/ml?
Concentrated aqueous HClO4 has a concentration of 14.8 M. Calculate the concentrations of all ions present in a solution prepared by pipetting 3.12 mL of concentrated HClO4 into a 1000. mL volumetric flask and filling to the mark.
Consider the weathering reaction describing the breakdown of K-feldpar to form the clay mineral kaolinite, a reaction of particular importance in tropical soils
a reaction in water causes the water in beaker to cool from 25 degrees celsius to 21 degrees celsius. the volume of
Your supervisor gives you a bottle of Tris and asks you to prepare 250 mL of 80 mM solution of Tris. In this case, you should weigh out __________ g of Tris and dissolve in ~200 mL of water. After completely dissolved, adjust the total volume to 250 ..
Calculate the volume of water required to reconstitute (also referred to as solubilize) the entire contents of the vial of ovalbumin to a final concentration of 6.1 mM.
Problem- you need to prepare 100 mL of a pH=4.00 buffer solution using .100 M benzoic acid (pKa = 4.20) and .160 M sodium benzoate. How Much of each solution should be mixed to prepare this buffer
Compare the proposed reaction mechanism for the sodium hypochlorite oxidation of cyclohexanol with that involved in the chromic acid oxidation
List the predominant species in Fe(NH4)2(SO4)2 6H2O solution. What is the net ionic equation for formation of iron (II) oxalate via the reaction of potassium oxalate and Fe(NH4)2(SO4)2 6H2O
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