Chemical Calculation Tables: For Laboratory Use (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Chemical Calculation Tables: For Laboratory Use

In order that accidental errors Of calculation may be avoided it is recommended that entirely independent duplications Of all calculations should be carried out, for mistakes are not always discovered by Simply looking over the work.

In Tables II and III the logarithms are generally given, for the sake Of uni formity, as though the atomic weights were exact, instead of approximate, num bers. For instance, a five-place logarithm is given for the atomic weight Of boron, just as though it were known to be This feature need cause no trouble as far as the gravimetric factors are concerned, since the latter are practically always more accurate than the data to which they are applied, and hence they need not be considered in deciding upon the significant figures of the results of ordinary calculations.

The numerical formula weights in Table III in some cases have an uncertain last figure.

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