The number of protons in the nucleus of the atom is equal to the atomic number. So the number of atomic number is equal to the number of protons. hope it helped (:
Answer:
This is a substance that has definite composition
Explanation:
chemicals are substances that can not be broken down any further by physical process.it is a form of matter having a constant chemical characteristics and properties
--> 0.058 g NaCl = 100 g solution
<span>1 g = 100/0.058 g solution </span>
<span>1.5 g = 150/0.058 g = 2586 g solution </span>
<h3><u>Answer</u>;</h3>
pH = 3.03
<h3><u>Explanation</u>;</h3>
NaCl is a neutral salt and does not affect the pH.
moles HCl = g HCl / MM
= 16.5 / 36.5
= 0.452 equivalent to moles H+
Molarity H+ = moles H+ / L
= 0.452 / 482
= 0.000938 M
Hence; pH = -log[H+]
= -log(0.000938)
= 3.03