the table below shows data for two isotopes of chlorine (cl). the data in the % abundance column represents…

the table below shows data for two isotopes of chlorine (cl). the data in the % abundance column represents the likelihood that any given atom\nisotope\tmass (amu)\t% abundance\n³⁵cl\t34.97\t75.78\n³⁷cl\t36.97\t24.22\nwhat is the weighted average mass of chlorine?\nyou may use the calculator.\na. 26.50\nb. 34.97\nc. 35.45\nd. 35.97

the table below shows data for two isotopes of chlorine (cl). the data in the % abundance column represents the likelihood that any given atom\nisotope\tmass (amu)\t% abundance\n³⁵cl\t34.97\t75.78\n³⁷cl\t36.97\t24.22\nwhat is the weighted average mass of chlorine?\nyou may use the calculator.\na. 26.50\nb. 34.97\nc. 35.45\nd. 35.97

Answer

Explicación:

Paso 1: Convertir porcentajes a fracciones

Multiplicar cada porcentaje de abundancia por 0.01 para convertirlo en fracción. Para $^{35}$Cl: $75.78\times0.01 = 0.7578$ Para $^{37}$Cl: $24.22\times0.01 = 0.2422$

Paso 2: Calcular la masa promedio ponderada

Multiplicar la masa de cada isótopo por su fracción de abundancia y sumar los resultados. $M = (34.97\times0.7578)+(36.97\times0.2422)$ $M = 34.97\times0.7578 = 26.499266$ $M = 36.97\times0.2422 = 8.954134$ $M=26.499266 + 8.954134=35.4534\approx35.45$

Respuesta:

C. 35.45