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what amino acid would provide a suitable buffer at ph 70 when made up with naoh and why how many grams of this amino
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what is the length of a cubic lose-packed unit cell of an element in picometers if the atomic radius is
a nacl solution contains 200 nacl by mass and has a density of 115 gml the molarity of the solution is hint assume
state whether you expect the following molecules to be polar or non-polar and arrange the molecules in increasing order
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another bottle holds 120 tablets each containing 180 of aspirin and sells for 395 calculate the value in milligrams of
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aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by
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the density of al is 27 gcm3 the density of lead is 1135 gcm3 what is the density of an 27al nucleus gcm3 what is the
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a 4000 gram sample of the unknown compound was found to contain 6406 gram of fluouride and 17931 gram of chloride
need help with this question calculate the heat needeed at 0 degreess c to make each of the fallowing changes of state
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the vant hoff factor for kcl is 185 what is the boiling point of a 090 solution of kcl in water for water
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four ice cubes at exactly 0 degrees celsius having a total mass of 525 grams are combined with 115 grams of water at 77