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Explain what is the heat of fusion of chromium in kJ/mol if 20.0 grams of solid chromium absorb 5.82 103 J of heat in melting at 2173 K, its melting point?
250 milligrams of butyric acid (CH3CH2CH2COOH) and 5 mL of ethanol (CH3CH2OH) were combined with conc sulfuric acid. What is the theoretical yield (in milligrams) of the ester product (CH3CH2CH2COOCH2CH3)?
a compound consists of 93.75 carbon and 6.25 hydrogen. the substance dissolves in benzene and 6.14 g of it lowers the
If we are using the 0.1% methyl red indicator, what is the approximate pH of the equivalence point of the titration between borax and sulfuric acid
What are the volumes of gases produced in the reaction of dehydration of 500 microliters of 2-butanol and 250 microliters of conc. sulfuric acid if the molar ration of gases (1-butene:trans-2-butene:cis-2-butene) is 1:3:2
How many double bonds are present in the "best" resonance structure of the phosphate ion?
the entropy chage for vaporization of hi at its boiling point is 89.0 j.k-1.mol-1. if the heat of vaporization of hi is
sketch reasonably accurately the ph curve for the titration of10.0 ml of 0.001m koh aq with 0.1m hcl aq. calculate and
solid iodine has a vapor pressure of 1.0mmhg at 39 degrees celsius. how many moles of iodine will sublime into a 500ml
water as a solvent for TLC of amino acids have opposed to a 90:7:3 acetate/water/propanioc acid?
A graduated cylinder contains 18.0 m/L of water. What is the new water level after 35.6 g of silver metal with a density of 10.5 g/mL,is submerged in the water?
Deionized water from a wash bottle was added to wash down the wall of the receiving flask during the titration .how does this affect the reported molar concentration of the sodium thiosulphate solution. explain
Calculated percentage of alcohol in the patient's body the, State the chemical reaction that took place in the patient's body.
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