question archive You must calculate the weight of each element and of the molecule The mass of the elemenst are bellow : K: 39 Cr:52 O:16 So, the total mass of 1 mol of the molecule is: 39
You must calculate the weight of each element and of the molecule The mass of the elemenst are bellow : K: 39 Cr:52 O:16 So, the total mass of 1 mol of the molecule is: 39
Subject:ChemistryPrice: Bought3
You must calculate the weight of each element and of the molecule
The mass of the elemenst are bellow : K: 39 Cr:52 O:16
So, the total mass of 1 mol of the molecule is: 39.(2)+52.(2)+16.(7) Total mass= 294 g/mol
So, 294 g is 100%, and if u want to find the respective element composition, u just need to devide the mass of 1 mol of the element in the molecule for the molecule mass:
Composition of K= (2x39)/ 294 = 0,26 = 26,5% Composition of Cr= (2x52)/294 = 35,4% Composition of O = (16x7) /294 = 38,1%
If u do the sum, it must be equal 100%
