Here is another question on Mole Concepts / Chemical Calculations for you to try. Leave your answer and working in the “Comment Section” directly below this post so that we can come together to discuss on it.
Example:
A metal compound has the formulae XCl4 and a relative formula mass of 261. What is:
a) The relative atomic mass of X? (ans: 119)
b) Metal X? (ans: Tin)
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PPS: Check ?Comments? below for Suggested Answers.
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Good way to approach the question. Keep up the good work.
a) Mr of Cl4
= 35.5 X 4
= 142
Mr of XCl4 = Ar of X + Mr of Cl4
Hence, Ar of X
= 261-142
=119
b) Ar of tin = 119 (refer to periodic table)