He answer is 42 because you carry the one
Answer:
x = 33.52 amu
Explanation:
It is given that,
Isotope A has a mass of 34 amu and an abundance of 52%, isotope B has a mass of 33 amu and an abundance of 48%.
Let x is the average atomic mass of this element. It can be calculated as follows :

So, the average atomic mass of this element is 33.52 amu.
Answer:
It's a, trust me I'm very good with chemistry
Answer:
B) 0.025 
Explanation:
Solution of the problem is in picture attached,