Answer:
A. 1 atm
Explanation:
Atm means atmosphere
Iron and chlorine
For every iron there are 3 chlorine.
KOH = 90g
KOH = 57 g/mol
K = 40g/mol
57g/mol contains 90 g
40g/mol will contain?
= 63.15 g
The mass of K is 63.15g
introducing a radioactive tracer into a sample of pesticide