A material system contains 65 "A" atoms and 35 "B" atoms, and the B atoms are 18 times as massive as the A atoms (the mass of a B atom is 18x higher than an A atom). What is the composition of this system in terms of at% B?

The system has 35% of B.

Explanation:

Number of A atoms = 65

Number of B atoms = 35

Mass of atom A = M

Mass of atom B = 18M

Total atoms of the system = 65  + 35= 100

Total of atoms of B =  35

The percentage of B is the system ;

The system has 35% of B.

b) mutualism

hope this : )

your answer would be “dry”