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.

    49/160 (page 37)
    Then C =z2HJzLh-=i 2-2J27 12 0=^= 4-5454 10 The simplest relation between the carbon and oxygen is at once seen to be as i to 2, since 2-2727 ; 4-5454 :: I : 2. Hence the formula of the compound is CO2 2. A compound of hydrogen and nitrogen was found to possess the following percentage composition. Calculate its formula. Nitrogen . . , 82-353 Hydrogen. . . 17-647 100-000 The atomic weight of N = 14, and of 11= i. N = ^2-353 ^ 5-882 14 H 17.5^7 The simplest ratio between the nitrogen and hydrogen is as I to 3, since 5 882 : 17-647 I : 3. Hence the formula of the body is NH... 3. A coni|)ound of iron and oxygen possesses the fol- lowing ])ercentage com])()sition. Calculate its formula. Iron 70-01 Oxygen .... 29-99 100-00 At. weight of Fe = 56-0. At. weight of O — 16.