A series of chemical problems with key for use in colleges and schools / by T.E. Thorpe. Rev. and enl. by W. Tate ; with a preface by H.E. Roscoe.

  • Thomas Edward Thorpe
Date:
1891
Catalogue details

Licence: Public Domain Mark

Credit: A series of chemical problems with key for use in colleges and schools / by T.E. Thorpe. Rev. and enl. by W. Tate ; with a preface by H.E. Roscoe. Source: Wellcome Collection.

    37/160 (page 25)
    25'OI22 — 24'47224- ]) = o'ooi2932.(i69's - i2‘5).762. (I-I-0-00367 X 215)760 r /- / I V 14-000367X211;-| i69-5(i+o-oooo23X2is)-I2-5— ^ L 1+000367X9 J 762.o'oooo8958 760.(1+0-00367 X 215). 0-5400+0-1971 r 762 0-00008958 1170 3-21-61^—. . ^ -^760 1-789 07371 X 1-789 X 760 148-7 X 0-00008958 X 762 9873- Questions. 51. Calculate the relative density of a solid substance from the following numbers:— Weight of substance in air . . . 2-4554 grams. „ „ water . . . 2-0778 grams. 52. Determine the relative density of gold from the following data;— Weight of gold in air ... . 4-6764 grams. Loss of weight in water . . . 0-2447 grams. 53. Find the relative densities of the following sub- stances :— Granite. Marble I hematite Weight in air.409-82 grams. 53-2841 grams. 13 6287 grins „ water. 259-31 „ . 33-4020 „ . 10 9406 ,, . 54. Determine the relative density of wood from the following numbers :— Weights of: wood in air, 4 grams,; a silver sinker, 10 grams,; wood and sinker under water, 8-5 grams. Relative density of silver = 10-5. 55. A platinum wire 10 cm. in lengnh weighs o-i2gram. The relative density of platinum being 21-275, calculate the diameter of the wire.