Question

Calculează compoziția procentuală,pornind de la raportul de masă al fiecăreia dintre substanțele de mai jos. Vă rog frumos urgentttttttt​

Answer 1

Răspuns:

a)

m total= 10+7+24=41g

41g.......10gCa....7gN......24gO

100g......x%Ca.....y%N.....z%O

x=100×10/41=24,4%Ca

y=100×7/41=17%N

z=100×24/41=58,6%O

b)

m total =9+16=25g

25g.......9g Al.......16gS

100g......x%Al........y%S

x=100×9/25=36%Al

y=100×16/25=64%S

c)

m total =1+6+24=31g

31g...........1gH......6gC.......24gO

100g.....x%H......y%C.......z%O

x=100×1/31=3,22%H

y=6×100/31=19,35%C

z=24×100/31=77,41%O

d)

m total =21+31+64=116g

116g.......21gLi.......31gP........64gO

100g.......x%Li........y%P.........z%O

x=100×21/116=18,10%Li

y=31×100/116=2672%P

z=64×100/116=55,17%O