Calculate the mass
fraction of all elements in
sodium sulfate (Na2S04).ASAP

Mass fraction of Na = 0.3239

Mass fraction of S = 0.2254

Mass fraction of O = 0.4507

Explanation:

We are given the element as (Na2S04).

Atomic mass of Na = 23

Atomic mass of S = 32

Atomic mass of O = 16

Thus;

Molar mass of (Na2S04) = (23 × 2) + 32 + (16 × 4) = 142

Mass fraction of Na = (23 × 2)/142 = 0.3239

Mass fraction of S = 32/142 = 0.2254

Mass fraction of O = (16 × 4)/142 = 0.4507

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.