Question

ordering question
click and drag on elements in order
place the steps used to calculate the average atomic mass of an element in order from first to last.
instructions
add the products of the multiplications.
find the atomic masses and abundances of each isotope of the element.
multiply the abundance of each isotope, expressed as a fraction, by its atomic mass.
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Explanation:

Step1: Find isotopic data

Find the atomic masses and abundances of each isotope of the element.

Step2: Multiply isotopic values

Multiply the abundance of each isotope, expressed as a fraction, by its atomic mass.

Step3: Sum products

Add the products of the multiplications.

Answer:

1. Find the atomic masses and abundances of each isotope of the element.
2. Multiply the abundance of each isotope, expressed as a fraction, by its atomic mass.
3. Add the products of the multiplications.