Did you read the whole thing?
Answer:
D. Protons ; neutrons.
Explanation:
For a given element the number of protons is fixed, but the number of neutrons differ because the element usually consist of a number of isotopes.
For example Carbon has isotopes which contain 12, 13 and 14 neutrons.
So that is why you average the number of neutrons to find the approximate atomic mass..
Answer: Increases ; decreases
Explanation: The more ionized the solution is the acidic it becomes, and the more acidic a solution is; the lower the pH value.
Therefore, when an acid ionizes in water, the number of hydronium ions in the solution increases and the value of the pH decreases.
Hope this helps :)
Hey there!:
density = mass / volume
1.84 g/mL = 12 g / V
V = 12 / 1.84
V = 6.521 mL
hope this helps!
