Mole ConceptHard
Question
The molecular formula of a compound is X4O9. If the compound contains 40% X by mass, then what is the atomic mass of X?
Options
A.24
B.12
C.26
D.13
Solution
$\frac{4}{9} = \frac{40/A_{X}}{60/16} \Rightarrow \text{Atomic mass of X, }A_{X} = 24$
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
Four groups of students are studying with different samples of alkali metal halides as given below. Group A: NaCl, Group...An amount of 5 moles of A, 6 moles of B and excess amount of C are mixed to produce a final product D, according to the ...Number of gas molecules present in 1 ml of gas at 0o C and 1 atm is called Loschmidt number. Its value is about...Two elements A and B combine to form compound X and Y. For the fixed mass of A, masses of B combined for the compounds X...The vapour density of a sample of hydrogen fluoride gas is measured by an experiment as 20. It may represent that (F = 1...