Question

A compound has a molecular formula x4o6 has 5.72g x then calculate atomic mass of x ???

Answer 1

Answer: the molecular weight of X4O6 is 4x+96, i think u knows how i get 4x+96 here ??  

let me to elaborate  

mol. wt of X4O6 = 4* atomic mass of X + 6 * atomic mass of O = 4x + 6*16 = 4x+96..  

where x is atomic mass of element X.  

so 4x+96 gms of X4O6 contains 4x gms of X.  

given, 10 g X4O6 contains 5.72 gms of X.  

so we can write, 4x+96 / 10 = 4x/5.72.  

solve the equtaion for x .  

by solving u can get  

x= 32.074 (answer )