884 "
First from (1),(3), and (5), calculate the sp. g. of the paraffin as
already shown. It will be 0.7948. Deduct (1) from (2) to get the weight
of the nitre:
57.830 grams
39.299 "
------
18.531 "
add this to (3):
18.531 grams
73.146 "
------
91.677 "
and deduct (4) to find the weight of the equal bulk of paraffin.
91.677 grams
84.665 "
------
7.012 "
divide the weight of the nitre by the weight of the paraffin:
7.012)18.531(2.6427
------
......
The sp. g., taking paraffin as the standard instead of water, is 2.6427.
Multiply this by the sp. g. of paraffin, 0.7948, and the result is
2.1004 as the sp. g. of nitre compared with water.
Similarly, a sp. g. compared with water at say 50° C. can be converted
into one compared with water at standard temperature, by multiplying by
the sp. g. of water at 50° C. The following table gives the sp. g. of
water at various temperatures:--
-----------+------++-----------+------++-----------+-------
Degrees | || Degrees | || Degrees |
Centigrade.|Sp. G.||Centigrade.|Sp. G.||Centigrade.|Sp. G.
-----------+------++-----------+------++-----------+-------
4° |1.0000|| 20° |0.9982|| 40° |0.9923
10° |0.9997|| 25° |0.
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