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a 8102-g sample of impure alco33 decomposed with hcl the liberated co2 was collected on calcium oxide and formed to
if methanol were used rather than water in measuring the density of the irregular objects how would that have affected
what is the energy of a photon of light that has a frequency of 309 x 1018 hz you might need to know that c 3 x 108 ms
what is a balaced equation for the precipitation of aspirin from a sodium acetylsalicylate solution by
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mining engineers often have to deal with gases when planning for the excavation of coal some of these gases including
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a sodium hydroxide solution was standardized by titrating 2650 ml of 01250 m standard hydrochloric acid the initial
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what is the ksp for cholesterol in the human body blood serum also what is cholesterols solubility in the blood
a student wished to prepare ethylene gas by the dehydration of ethanol at 140 c using sulfuric acid as the dehydrating
when 2-methylpropene is bubbled into dilute sulfuric acid at room temperature it appears to dissolve what new substance
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to what volume should you dilute 595ml of a 495m ki solution so that 260ml of the diluted solution contains 345g of
you made a ph 10 buffer by combining 142 ml of 28 nh4oh with 175 g nh4cl what would have been the ph of the buffer if
naoh solution- you will prepare naoh solution by diluting 3ml of 50 by mass naoh p153 gml to 500 ml note 50 by mass
consider the following reaction a reaction mixture initially containing 0490 and 0490 was found to contain 11times10-3
a 0066 mol sample of formaldehyde vapor ch2o was placed in a heated 500 ml vessel and some of it decomposed the
kb for nh3 is 18 x 10-5 what is the ph of a 035 m aqueous solution of nh4cl at 250 degrees c nh4 aq lt----gtnh3aq h
using the information a 70 x 10 -3 aqueous solution of caoh2 at 250 degrees c has a ph of at equilibrium what is the
europium is a lanthanide element found in parts per billion levels in natural waters it can be measured from the