I need help filling out the empirical formula determination chart please. Data f

Question

I need help filling out the empirical formula determination chart please.

Data for mass% of water Mass of empty crucible Mass of crucible and double sulfate salt before heating Mass of double sulfate salt used in this part Mass of crucible and double sulfate salt after heating Mass of water in the sample Mass percent of water in the sample (show calculation setup below) 24.445g- 5.45 1.0053 25.1969 0.251a 35.2742 6.254s :25, o. 252736 x1oo= 25.2749. 1.005 Data for mass% of sulfate ion Mass of empty beaker Mass of beaker and double sulfate salt Mass of double sulfate salt used in this part Mass of empty filter paper (corner torn) Mass of filter paper and dry BaSO4 Mass BaSO4 Mass SO (show calculation setup below) 115.639 116.438g 1,0041 g L.823g 2.938 g 115-g 0.45% 745.712 Mass percent of sulfate ion in the sample (show calculation setup below) 0.459 -100 29,4520 26 004l a

Explanation / Answer

% mass of K = 17.9

moles of K = % mass/atomic mass of K= 17.9/ 39.1 = 0.46

% mass of Ni =9.355

moles of Ni =9.355/58.7 = 0.16

% mass of sulphate ion = 45.712

moles of sulphate ion = 45.712/96 =0.48

%mass of water =25.274

moles of water = 25.274/18 = 1.4

w:x:y:z

0.46: 0.16: 0.48: 1.4

divide by 0.16

we will get nearly (in integer)

3: 1: 3 :9

hence w =3, x=1, y=3 and z=9

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