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a chemist has synthesized two new dyes based on the molecular structure of plant-based dyes the lowest energy
a explain what are the advantages and disadvantages of writing a chemical equation with chemical symbols and formulas
a buffer was prepared by mixing a solution that is 0285 m in ha and 0385 in a- the ph of this buffer was 4435 then to
the pkb values for the dibasic base b are pkb1 210 and pkb2 748 compute the ph at each of the following points in the
1 find out the molar mass of a gas if 394g of the gas occupied a volume of 352l at stp2 the combination reaction
for the subsequent questions consider the reaction between magnesium and oxygenmgso2g -gt mgos1 explain how many grams
consider the neutralization reaction that takes place when nitric acid reacts with solid ironii carbonatea state a
obviously occurring element x exists in three isotopic forms x-28 27977 amu 9221 abundance x-29 28976 amu 470 abundance
the half -life of 14c is 5730 years a sample taken for radiocarbon dating was initiate to contain 56 percent of its
a packing crate measures 040m x 040m x 025m you must fill the crate with boxes of cookies that each measure 220cm x
explain what is the intact compound equation as well as the net ionic equation for the neutralization of aqueous
two substances are mixed together define how the observer could determine if this reaction is just a mixture or an
the reaction shown above has been determined to be first order with respect to n2o5 if 00250 moles of n2o5 are charged
if a sample of helium is collected by displacing 182 mlk of water the pressure of the gas as well as the atmosphere is
0015 grams mg was placed in a 153ml flask the flask was immersed in a water bath whose temp was 24 celsius when 5mls of
define why bubbling a solution with an inert gas such as argon or nitrogen causes deoxygenation of the
if this experiment was carried out precisely as directed in the procedure section by a student in australia for
n part 1 the solution of m2co3 hcl is transferred to volumetric flask and diluted to precisely 250ml explain why must
explain what volume of a 0550 m nh4i solution is needed to react with 759ml of a 0280 m pbno32
state the reaction equation for antifreeze poisoning and give its treatment reaction equations balanced when possible
if 520 g of hcl is added to enough distilled water to form 300 l of solution explain what is the molarity of the
solutions of silver nitrate as well as aluminum iodide are mixed together forming solid silver iodide as well as
explain what is the name of the sticky gelatinous precipitate that is formed in the primary treatment process as well
state mathematical equation that show how you will compute the detected activity from the count rate the sample
silver carbonate ag2co3 is a sparingly soluble solid explain a saturated solution prepared by placing solid silver