It is so simple when you have [OH-] so you will use it to get POH from this formula:
POH = -㏒[OH]
= -㏒ 2.5 x 10^-4
= 3.6
when PH + POH = 14
∴ PH = 14 - POH
= 14 - 3.6 = 10.4
A type of electromagnetic radiation would be electromagnetic waves
Answer:
40 mL
Explanation:
V2=P1V1/P2
You can check this by knowing that P and V at constant T have an inverse relationship. Hence, this is correct.
Calculating the number of mole of COSO4 reacted
=mass/R.F.M
R.F.M of CUSO4 is 63.54+32+64=159.6
moles is therefore 200g/159.54=1.254moles
since reacting ratio is 1:1 ,moles of Cu is also 1.254moles
mass is therefore moles x R.F.M
1.254x63.54=79.6g(answer C)