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When 15.0 L of water is added to 1.5 liter of a 2.0 M solution of potassium phosphate (aq), what is the final concentration
Calculate the mass of TRIS to use when it is mixed with 100 mL of 0.50 M HCl to prepare 1.00 L of buffer of pH=7.40. Also calculate the total concentration of the buffer.
Identify which of the following statements about the halogenation of alkane hydrocarbons are correct. a) Halogenation of alkanes follows a chain mechanism.
A growth factor for cells was identified from extracts of rat brain. Preliminary characterization was done on this activity using several methods.
A helium-filled balloon at sea level has a volume of 2.5 L at 0.989 atm and 33°C. If it is released and rises to an elevation at which the pressure is 0.900 atm and the temperature is 29°C, what will be the new volume of the balloon?
What mass of oxygen (in grams) reacts when 14.2 g of ethanol (CH3CH2OH) are combusted in oxygen to produce carbon dioxide and water
Using the Rydberg equation calculate to four sig figs the energy of electromagnetic radiation necessary for ionization
why is it important to immediately cover the Mg ribbon with the other slab of dry ice once it starts burning?
Further recylcing reactions that would take the products back to some of the monomers. What reactions to use? What would you get as products
A piece of iron limestone weighing 0.1965g was allowed to react with an excess of hydrochloric acid. The calcium in it was precipitated as calcium ethanedioate.
What is the oxidation number of chlorine atom in Clo- c)What is the oxidation number of manganese in MnO2
Calculate the change in Gibbs free energy for each of the following reactions. In each case indicate whether the reaction is spontaneous under standard conditions.
Styrene, phenylethene, is treated with H3PO4, an acid whose conjugate base is a poor nucleophile.
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