Hallar la composición centesimal del dicromato de potasio?
Hallar la composición centesimal del dicromato de potasio.
Hallar la composición centesimal del dicromato de potasio.
Pregunta de Química · 1 respuesta · 8 votos · mejor respuesta de BetiFlor4547
En resumen
Calcular Mm del K2Cr2O7 K : 2 x 39 = 78 g / molCr : 2 x 52 = 104 g / mol O : 7 x 16 = 112 g / mol`````````````````````````````````````````````````` Mm = 294 g / mol% Potasio 294 g - - - - - 100 % 78 g - - - - - x x = 26.
Calcular Mm del K2Cr2O7 K : 2 x 39 = 78 g / molCr : 2 x 52 = 104 g / mol O : 7 x 16 = 112 g / mol`````````````````````````````````````````````````` Mm = 294 g / mol% Potasio 294 g - - - - - 100 % 78 g - - - - - x x = 26.
53 % K% Cromo 294 g - - - - - 100 % 104 g - - - - - x x = 35.
37 % Cr% Oxígeno 294 g - - - - - 100 % 112 g - - - - - x x = 38.
09 % O.
C3H8 Mm : C : 3 x 12 = 36 g / mol H : 8 x 1 = 8 g / mol ```````````````````````````` Mm : 44 g / mol C : 44 g - - - - 100 % 36 g - - - - x x = 81. 81 %C H : 44 g - - - 100 % 8 g - - - x x = 18. 18 %H 1 - penteno CH2 =…
Cloruro de bario BaCl2 calcular masa molecular Ba : 1 x 137. 33 = 137. 33 g / mol Cl : 2 x 35. 45 = 70. 9 g / mol `````````````````````````````````````````` Mm = 208. 23 2. Calcular % Bario 208. 23 g - - - - - - - 100 %…
Calcular Mm KMnO4 K : 1 x 39 = 39 g / molMn : 1 x 54. 93 = 55 g / mol O : 4 x 16 = 64 g / mol````````````````````````````````````````` Mm = 158 g / mol Potasio 158 g - - - - - - 100 % 39 g - - - - - - x x = 24. 68 % K…
1. Calcular Mm KMnO4 K : 1 x 39 = 39 g / mol Mn : 1 x 55 = 55g / mol O : 4 x 16 = 64 g / mol``````````````````````````````````` Mm = 158 g / mol 2. Calcular % de cada elemento Potasio 158 g - - - - - 100 % 39 g - - - -…