the table below gives the data that is needed to calculate the average atomic mass of element…

the table below gives the data that is needed to calculate the average atomic mass of element b.\n|isotope|atomic mass (amu)|relative abundance (%)|\n|b - 10|10.01|19.91|\n|b - 11|11.01|80.09|\nbased on these data, what is the average atomic mass of element b?\no 10.01\no 10.51\no 10.81\no 11.01

the table below gives the data that is needed to calculate the average atomic mass of element b.\n|isotope|atomic mass (amu)|relative abundance (%)|\n|b - 10|10.01|19.91|\n|b - 11|11.01|80.09|\nbased on these data, what is the average atomic mass of element b?\no 10.01\no 10.51\no 10.81\no 11.01

Answer

Explanation:

Step1: Convert percentages to decimals

$19.91% = 0.1991$, $80.09%=0.8009$

Step2: Calculate weighted - mass for B - 10

$10.01\times0.1991 = 1.992991$

Step3: Calculate weighted - mass for B - 11

$11.01\times0.8009 = 8.817909$

Step4: Calculate average atomic mass

$1.992991 + 8.817909=10.8109\approx10.81$

Answer:

10.81