Final answer:
To determine the mass and percent abundance of Strontium-88, we can use the information provided. By subtracting the percent abundances of the other isotopes from 100%, we can find the percent abundance of Sr-88. Using the formula for average atomic mass, we can solve for the mass of Sr-88.
Step-by-step explanation:
To determine the mass and percent abundance of Strontium-88, we can use the information provided. Given that Sr-84 has a mass of 83.913 amu and a percent abundance of 0.56%, Sr-86 has a mass of 85.909 amu and a percent abundance of 9.86%, and Sr-87 has a mass of 86.909 amu and a percent abundance of 7.00%, we can calculate the mass and percent abundance of Sr-88.
Considering that the total percent abundances of all four strontium isotopes must add up to 100%, we can find the percent abundance of Sr-88 by subtracting the percent abundances of Sr-84, Sr-86, and Sr-87 from 100%: 100% - 0.56% - 9.86% - 7.00% = 82.58%.
Since the average atomic mass of strontium is provided, we can use the formula for average atomic mass to calculate the mass of Sr-88: Average atomic mass = (% abundance x mass) + (% abundance x mass) + (% abundance x mass) + (% abundance x mass).
Plugging in the values for all the isotopes: (0.56% x 83.913 amu) + (9.86% x 85.909 amu) + (7.00% x 86.909 amu) + (82.58% x mass of Sr-88) = average atomic mass of strontium.
Solving for the mass of Sr-88: