Answer:
The answer is option d.
Ka = (H+)(H2PO4-)/(H3PO4)
Hope this helps.
Answer:
look it up in google it dead in your face m8 i just did
Explanation:
Number of moles = mass of Ni /molecular mass of Ni
mass of nickel = 86.4 g
molecular mass of nickel = 58.69
number of moles of Ni in 86.4 g
=86.4/58.69
=1.472 mol
(rounded to four significant figures instead of three because the first digit of the answer starts with a 1).