CBSE Class 11-science Answered
Two elements P and Q form P2O3 and PQ2. If 0.15 mole of P2Q3 weigh 15.9g and 0.5 mole of PQ2 weigh 9.3 g. Find atomic mass of P and Q.
Asked by Prince Sonu | 18 Apr, 2013, 09:32: PM
Expert Answer
Lets assume the atomic masses of P and Q are x and y respectively.
Mw of P2Q3 = 2 x + 3 y
MW of PQ2 = x + 2 y
we know moles = weight/ mw
so, 2x + 3y = 15.9/ 0.15
x + 2y = 9.3/ 0.15
Solving these equations, you will get x= 26, y =18
Answered by | 19 Apr, 2013, 09:22: PM
Concept Videos
-
Basic Concepts of Chemistry
This video explains the concept of mole in terms of mass, volume, number an... -
Basic Concepts of Chemistry
This video explains the importance of chemistry in daily life, SI units of ... -
Basic Concepts of Chemistry
This video explains the concept percentage composition and empirical formul... -
Basic Concepts of Chemistry
This video explains classification and physical properties of matter. -
Basic Concepts of Chemistry
This video explains the law of conservation of mass, law of definite propor...
CBSE 11-science - Chemistry
Asked by hm6561889 | 15 Apr, 2024, 07:45: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by manikandanragul1 | 11 Apr, 2024, 09:02: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by jayag1298 | 08 Apr, 2024, 03:14: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by omniscientnjf2021 | 07 Apr, 2024, 10:18: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by ansh.skulkarni1158 | 07 Apr, 2024, 11:03: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by nikhithaguguloth14 | 29 Mar, 2024, 08:15: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by sumedhasingh238 | 27 Mar, 2024, 11:04: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by avijotsingh946431 | 22 Feb, 2024, 05:36: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by gurmelsinghray | 21 Feb, 2024, 08:43: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by VarunTYAGi9013 | 21 Oct, 2023, 07:14: PM
ANSWERED BY EXPERT
