Answer:
Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
Explanation:
The answer is D
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
with the proton inside the nucleus
