CBSE Class 11-science Answered
Two oxides of a metal contain 27.6% and 30.0% of oxygen respectively. If the formula of the first oxide is M3O4, find that of the second.
Asked by Koushtav Chakrabarty | 19 Jul, 2012, 01:34: PM
Expert Answer
Percentage of oxygen=27.6
Precentage of metal=100-27.6=72.4
Formula of the metal oxide=M3O4
Let the atomic mass of the metal= x
Percentage by weight of the metal in the oide M3O4=3x *100/3x+64=72.4
3x=0.724*3x+0.724*64
0.828x=46.336
x=56
The atomic mass of the metal=56
Element Precentage Atomic Mass Atomic ratio Simplest ratio whole no.ratio
M 70 56 70/56=1.25 1.25/1.25=1 2
O 30 16 30/16 1.88/1.25=1.5 3
M2O3
Answered by | 20 Jul, 2012, 01:24: AM
Concept Videos
-
Mole Concept
This video explains the concept of mole in terms of mass, volume, number an... -
Chemistry in Daily Life and SI Units
This video explains the importance of chemistry in daily life, SI units of ... -
Percentage Composition and Empirical Formula - Part 1
This video explains the concept percentage composition and empirical formul... -
Classification of Matter
This video explains classification and physical properties of matter. -
Laws of Chemical Combination - Part 1
This video explains the law of conservation of mass, law of definite propor...
CBSE 11-science - Chemistry
Asked by abhiabhishek842006 | 09 Jan, 2023, 08:34: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by Jprmumal29 | 18 Dec, 2022, 09:48: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by mallikarjunasangi28 | 22 Jul, 2022, 07:57: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by kdimple765 | 17 Jul, 2022, 01:24: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by Shashisinghkusum | 13 Jul, 2022, 02:44: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by alfirozislam900 | 03 Jul, 2022, 01:24: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by alfirozislam900 | 03 Jul, 2022, 01:23: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by vibhutimandal70 | 26 Jun, 2022, 10:39: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by arpitsingh373667 | 24 Jun, 2022, 05:00: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by bhagwatkrutika6 | 22 Jun, 2022, 08:09: PM
ANSWERED BY EXPERT