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The solubility of KNO3 is 155g per 100g of water at 75 degree celsius and 38.0 g at 25 degree celsius. what mass in grams of KNO3 will crystalize out of solution if exactly 100g of its saturated solution at 75 degree celsius is cooled to 25 degree celsius.
What mass of zinc oxide can be produced from the reaction of 415 g zinc sulfide with 265 g of oxygen gas? The other product is sulfur dioxide.
What is the balanced equation for copper (II) hydroxide + acetic acid (HC2H3O2)? and what is it's reaction, single, or double replacement.
If matose is made up of two alpha D-glucose units connected together by an alpha(1-4) linkage, how can it give a positive test as a reducing sugar?
Calculate the heat evolved in kilojoules by the formation of the solution. Calculate the heat evoled per mole of sulfuric acid. Use n(changeH) = -(mCchangeT)
Calculate the concentration of Na+ ions (in mol/L) for each of the following. a) A 41.0 mL sample of 2.0 M Na3PO4 which has been diluted to 300.0 mL b) 8.50 g Na2CO3•5H2O(s) is made up in a total volume of 3.50 L
A method of preparing a very pure alkane is to react the corresponding alkyl magnesium halid (grignard reagent) with water and collect the alkane product.
How does the first ionization energies change as you go from left to right across the periods; explain what causes the trend to fluctuate
the equilibrium constant for a chemical transformation can be predicted from its stoichiometric coefficients whereas the rate law must be determined experimentally.
Calculate the binding energy for Cf-253 if one atom of this nuclide has an atomic mass of 253.08417. Express your answer in units of picojoules/nucleus where 1 picojoule = 1x10-12 joule
pKa values of phosphoric acid are 2.2, 7.2 and 12.7. A phosphate buffer of pH = 7.4 can be prepared using
The solubility of solute in a solvent depends on various parameters, such as temperature, pressure, the nature of the solute, and the nature of the solvent. Considering these parameters, identify the statements that are correct for the solubility ..
Peptide hormones must bind to receptors on the extracellular surface of their target cells before their effects are communicated to the interior. In contrast, receptors for hormones such as estrogen are intracellular proteins. Why is this possible..
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