Answer:
-2.
Step-by-step explanation:
3n must be greater than 25 for the first negative term:
3n > 25
n > 25/3
n > 8 1/3.
So n = 9 and the first negative term is 25 - 3*9
= 25 - 27
= -2.
The answer comes out to be 13.23
Answer:
75
Step-by-step explanation:
3×(5) squared becomes 3× 25=75
Answer:
18.446
Step-by-step explanation:
There are 1.505535375e+24 atoms in 2.50 moles of iron.