Answer:
I think that the answer is B or a
Explanation:
Option d: copper.
Because copper is an element, not a mixture.
Answer:
pH = 0.832
Explanation:
pH is given by the formula;
pH = - log [H+]
in this case we are given 0.147 M HCl
HCl is a strong acid and therefore completely dissociates to give out H+ ions,
Therefore; [H+] = [HCl] = 0.147 M
Hence;
pH = - log 0.147 M
<u> = 0.832 </u>
Answer:
True
Explanation:
Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness.
Right angle acute angle obtuse angle