Answer:
The correct answer is option C) 73.92
Explanation:
Hi!
Let's solve this!
On the scale we see:
In the first rule the number 70, in the second rule the 3 so we have 73.
In the third rule we see the 9 marked and run two places.
According my vision of the image, we conclude that the correct answer is option C) 73.92
To determine the relative atomic mass of thallium, we multiply the molar mass of the isotopes to their corresponding relative abundance. The molecular percentages should sum up to 1. In this case, we multiply 203 by 0.295 and 205 by 0.705 and add the answers of the two. The final atomic mass is 204.41 g/mol.
By the information you gave i can say that when atoms gain energy the molecules spread out and if you had a solid it would become a liquid and if you had a liquid it would become a gas
Hope this helps
