Question

directions: drag the number of isotope atoms indicated below into the black box in the simulation.
number of atoms for each isotope:

• hydrogen - 1 = 2 atoms
• hydrogen - 2 = 8 atoms

answer the following questions based on the percent composition and average atomic mass data:

1. what is the percent composition of hydrogen - 1?

% only type a number!

1. what is the percent composition of hydrogen - 2?

% only type a number!

1. what is the average atomic mass of the two isotopes?

amu only type a number, round to 2 decimal places!

Explanation:

Step1: Calculate total number of atoms

Total atoms = \(2 + 8=10\)

Step2: Calculate percent composition of Hydrogen - 1

Percent composition \(=\frac{2}{10}\times100 = 20\)

Step3: Calculate percent composition of Hydrogen - 2

Percent composition \(=\frac{8}{10}\times100 = 80\)

Step4: Calculate average atomic mass

Let mass of Hydrogen - 1 (\(H - 1\)) be \(1\) amu and Hydrogen - 2 (\(H - 2\)) be \(2\) amu.
Average atomic mass \(=(0.2\times1)+(0.8\times2)=0.2 + 1.6=1.80\)

Answer:

1. \(20\)
2. \(80\)
3. \(1.80\)