Answer:
1. 2c+9=m
Step-by-step explanation:
Answer:
the common difference is 6.
Step-by-step explanation:
Given;
first term of an AP, a = -7
let the common difference = d
The third term is written as;
T₃ = a + 2d
The eight term is written as;
T₈ = a + 7d
The ratio of the eight term to third term = 7:1

Therefore, the common difference is 6.
Multiply the number of atoms in 1 mole by .44 so...2.7x10^23 atoms