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Physics, 28.10.2020 15:50 darriennichole

1. Conocidas la fórmula del carbonato de sodio y las masas atómicas correspondientes. Determinar la masa molar de esta sustancia, la composición centesimal de cada elemento en ese compuesto y los gramos de cada uno de los elementos que existen en 500 g de compuesto puro. Masas atómicas: C = 12; O = 16; Na = 23. 2. Al analizar un hidrato de carbono hemos obtenido la siguiente composición centesimal: 40 % de Carbono, 6,71 % de Hidrógeno y 53,29 % de Oxígeno. Por otro lado, averiguamos que su masa molecular es 180. Calcular la fórmula empírica y molecular. Masas atómicas: C = 12; O = 16; H =1
3. Un hidrocarburo contiene un 85,7 % de C, siendo su densidad 1,875 g/l, en C. N. Hallar su fórmula empírica y molecular. Masas atómicas: C=12; H = 1
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