calculate the relative atomic mass of gallium to two decimal places. before you do the calculation, make a…

calculate the relative atomic mass of gallium to two decimal places. before you do the calculation, make a prediction based on the mass and the percent abundance of the isotopes. (0.5 points)\nisotope\tabundance (%)\n$^{69}$ga\t60.10\n$^{71}$ga\t39.90\nenter your answer

calculate the relative atomic mass of gallium to two decimal places. before you do the calculation, make a prediction based on the mass and the percent abundance of the isotopes. (0.5 points)\nisotope\tabundance (%)\n$^{69}$ga\t60.10\n$^{71}$ga\t39.90\nenter your answer

Answer

Explanation:

Step1: Convert percentages to decimals

$60.10% = 0.6010$, $39.90%=0.3990$

Step2: Calculate contribution of each isotope

Contribution of $^{69}Ga$: $69\times0.6010 = 41.469$ Contribution of $^{71}Ga$: $71\times0.3990=28.329$

Step3: Calculate relative atomic mass

$41.469 + 28.329=69.798\approx69.80$

Answer:

$69.80$