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What is an ion of an element ? When an element has a charge what happens to the element?
Calculate the new vapor pressure of iodine at the same temperature when 100 bar of He gas is added to the container in which the iodine is held.
What is the pH (to nearest 0.01 pH unit) of a solution prepared by mixing 52.0 mL of 0.631 M HCl and 63.0 mL of 0.723 M NaOH
One gallon of gasoline in an automobiles engine produces on the average 9.50 kg of carbon dioxide. Calculate the annual production of carbon dioxide in kg if there are 40 million cars in the US and each car covers a diastase of 5000 miles at a con..
what are the allowed value for quantum numbers l,m, and s. Explain how this fits with the Mendeleev arrangement of the periodic table.
Using concentrations, the solubility of [Ag+] in a solution of 0.01 M KCl is 1.8 * 10-8. Calculate the percent relative error when using concentrations for the solubility of [Ag+] compared to activities
How much heat does your body lose when 2.60 of sweat evaporates from your skin at 25 ? (Assume that the sweat is only water.) The heat of vaporization of water at 25 degrees C is 44.0g.
Define A mixture of benzoic acid, benzyl alcohol, and biphenyl is spotted on a silica gel TLC plate and developed in a dichloromethane-cyclohexane solvent mixture. Forecast the relative Rf values for the three components in the sample.
an analysis of drinking water found it to have 4.5 ppb parts per billion of arsenic. how many grams of arsenic are in a
The combustion of one mole of propane, C3H8, releases 531 kcal. How much heat is released by the combustion of 1.20 moles of propane?
the sulfur is converted into sulfur dioxide gas.The sulfur dioxide reacts with solid calcium oxide to form solid calcium sulfite
Calculate the work in Joules when 2.5 mols of water vaporizes at 1 atmosphere pressure and 25 degrees C. The work is done in pushing back the atmosphere.
based upon your experiences suggest what would be the result if we heated a mixture of dichloromethane bp 39-40 celcius
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