24 (1905), 787-790]. All gravities are taken at 15.5 deg.C. and compared
with water at the same temperature.

Aqueous ammonia (sp. gr. 0.96) contains 9.91 per cent NH_{3} by
weight, and corresponds to a 5.6 N and 5.6 molal solution.

Aqueous ammonia (sp. gr. 0.90) contains 28.52 per cent NH_{3} by
weight, and corresponds to a 5.6 N and 5.6 molal solution.

Hydrochloric acid (sp. gr. 1.12) contains 23.81 per cent HCl by
weight, and corresponds to a 7.3 N and 7.3 molal solution.

Hydrochloric acid (sp. gr. 1.20) contains 39.80 per cent HCl by
weight, and corresponds to a 13.1 N and 13.1 molal solution.

Nitric acid (sp. gr. 1.20) contains 32.25 per cent HNO_{3} by weight,
and corresponds to a 6.1 N and 6.1 molal solution:

Nitric acid (sp. gr. 1.42) contains 69.96 per cent HNO_{3} by weight,
and corresponds to a 15.8 N and 15.8 molal solution.

Sulphuric acid (sp. gr. 1.8354) contains 93.19 per cent H_{2}SO_{4} by
weight, and corresponds to a 34.8 N or 17.4 molal solution.

Sulphuric acid (sp. gr. 1.18) contains 24.74 per cent H_{2}SO_{4} by
weight, and corresponds to a 5.9 N or 2.95 molal solution.

The term !normal! (N), as used above, has the same significance as
in volumetric analyses. The molal solution is assumed to contain one
molecular weight in grams in a liter of solution.

DENSITIES AND VOLUMES OF WATER AT TEMPERATURES FROM 15-30 deg.C.

Temperature Density. Volume.
Centigrade.

4 deg. 1.000000 1.000000
15 deg. 0.999126 1.000874
16 deg. 0.998970 1.001031
17 deg. 0.998801 1.001200
18 deg. 0.998622 1.001380
19 deg. 0.998432 1.001571
20 deg. 0.998230 1.001773
21 deg. 0.998019 1.001985
22 deg. 0.997797 1.002208
23 deg. 0.997565 1.002441
24 deg. 0.997323 1.002685
25 deg. 0.997071 1.002938
26 deg. 0.996810 1.003201
27 deg. 0.996539 1.003473
28 deg. 0.996259 1.003755
29 deg. 0.995971 1.004046
30 deg. 0.995673 1.004346

Authority: Landolt, Boernstein, and Meyerhoffer's !Tabellen!, third
edition.

CORRECTIONS FOR CHANGE OF TEMPERATURE OF STANDARD SOLUTIONS

The