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.

    53/160 (page 41)
    109. Carbon . . Hydrogen . 8571 14-29 112. Carbon . . Hydrogen. Nitrogen . . • 74’07 . 8-64 ■ '7'29 lOO'OO 100 00 110. Carbon . . Hydrogen . 92-3 77 III. Carbon . . Hydrogen . Sulphur Oxygen. . 100*0 19-04 • 476 ■ 25-40 . 50-80 113. Carbon . . Hydrogen. . Nitrogen . . Oxygen . . Platinum . Chlorine . . . 46-66 . 4-26 . 5-20 • 5'92 . 1826 • 1970 100-00 100*00 1 114. Show that a mineral having the following per- tcentage composition is represented by the formula MOCOj when M signifies a metal of the magnesium I family ; Lime 28-4 Magnesia 12-3 Iron monoxide .... 12-3 Manganese monoxide . 1-9 Carbon dioxide . . . 44'4 99'3 115. The mineral kerolite gave the following numbers on analysis. Calculate its formula : .SiOj MgO H./f 46'96 3 red 2i'22 = 99'44. ti6. a specimen of cobalt-bloom was found to ha\'e the following composition. Detemiine its formula ; As., O- Co (J Fc O 11./) 3^'43 '01 24-]o=ioo'o6 117. Calculate the formula of soda-feldspar from the following analysis:— SiO.^ AI2O3 Fe./Jj CaO MgO K,0 Na/4 68'45 1871 o'27 050 018 o'65 ir24 = ioo’oo.