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)
PS: “Either You Practice & Use It, or You Loose It!”
PPS: Check ?Comments? below for Suggested Answers.