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tetraphosphorousdecaoxide reacts with water to produce phosphoric acid p4o10 h2o h3po4a balance the equationb four
the solublity of acetanilide in hot water is 55 g100ml at 100 degee centigrade and its solublity in cold water is
suppose that an internal combustion engine runs on octane for which the enthalpy of combustion is -5515 kj mol and take
a block of copper of mass 500 g and initially at 293 k is in thermal contact with an electric heater of resistance 1000
predict whether benzoic acid will dissolve in 10 m naoh or 10m hcl draw the structure of benzoic acid once disolved in
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a 03288 g sample of a hydrocarbona compound of carbon and hydrogen was burned in air the samplewas completely
outline a procedure for the recrystallization of benzoic acid that contains both a soluble and an insoluble impurity
what mass of mgnh4po4 precipitated when 2000ml of a 1000 wv solution of mgcl2 were treated with 400ml of 01753 na2po4
a chemical reaction was used to produce 196 moles of copper ii bicarbonate cu hc032 what mass of copper ii bicarbonate
a backyard swimming pool holds 190 cubic yards yd3 of water what is the weight of the water in
describe the possible effect on your results of the following experimental errors in each case specify the components
sketch the h nmr spectra for all of the isomers of rhh2clpph33 consider only the hydride hydrogens directly bonded to
in a 1-l beaker 203 ml of 0307m ammonium chromate was mixed with 137ml of 0269m chromiumiii nitrite to produce ammonium
a hypothetical element has a bcc crystal structure an atomic radius of 0149 nm and an atomic weight of 9603 gmol what
the content of manganese in steel was found using atomic absorption and the method of standard additions a standard
suppose the original sample is unknowingly contaminated with a second anhydrous salt will the reported percent water in
write an equation for the process that corresponds to the electron affinity of the mg ion express your answer as a
the crucible is handled with oily fingers after its mass measurement the oil from the fingers is burned off will the
given the following equation how many grams of pbco3 will dissolve exactly when 15l of 100 m h is added to 500g of
the fired crucible is handled with oily fingers before its mass measurements subsequently the sample is heat and the
draw structural formulas and complete write the names under the products and indicate the major one show the reaction
in visible spectroscopy we place a sample in a source and observe transmittance if we observe 420nm absorbed by the
describe the technique you would use to determine the density of approximately 5 gram samples of the following at 20
ascorbic acid vitamin c present in apples is burned in the presence of excess oxygen to yield 580 mg co2 and 158 mg h2o