When an analysis of a compound shows that it contained
What is the molecular formula of the compound when an analysis of a compound shows that it contained the 21.8% H and 78.2% B and hand a molecular weight of 27.6.
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A certain adjustment to machine will change the length of the parts it makes but will not affect the standard deviation. The length of the parts is normally distributed, and the standard deviation is 0.5 mm. After an adjustment is made, a random s
Divide the following reaction into half-reactions, balance the half-reactions, and combine the balanced half-reactions into the balanced overall equation for the reactions.
A mixture containing only AgCl3 and FeCl3 weighs 5.95 g. The chlorides are converted to the hydrous oxides and ignited to Al2O3 and Fe2O3. The oxide mixture weighs 2.62 g. Determine the percent Al and Fe in the original mixture.
What weight of pyrite ore must be taken for analysis so that the BaSO4 precipitate weight obtained will be equal to one-half that of the percent S in the sample when a sample of pyrite ore (impure FeS2) is precipitated to the BaSO4.
Consider P be the non-empty family of sets, consider I be non-empty set and consider {Ci} for all i in I be family of chains in P. Is intersection of Ci always a chain in P? Write the proof or the counter example.
Determine the numbers of mols of iron ion are there in the solution? Determine the numbers of mols of phosphate ion are there in the solution?
Determine the Variance and Standard deviation for the number of times the SAT is taken (to 4 decimals)?
Discuss how would the electrons formed in a cathode ray tube filled with the neon gas compare with the electrons formed in a cathode ray tube filled with chlorine gas?
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