Answer:
C
Explanation:
It is most likely non metal with a high electronegativity.
Sulfur has 6 electrons, so we put 6 in the first spot.
Oxygen has 6 electrons too, but since there are 3, we would multiply 6 times 3 , which equals 18, then add that too.
The 2 is added because there is that negative 2 at the top of the formular, which indicates the presence of two extra valence electrons.
the equation would be
6 + 18 + 2 = 26
First, we are going to use H-H equation :
when PH = Pka + ㏒ [acetate / acetic acid]
when we have Ka value = 1.8 x 10^-5 so, we can get the Pka value:
Pka = - ㏒Ka
= - ㏒ 1.8 x 10^-5
= 4.74
by substitution:
∴ 4.58 = 4.74 + ㏒[acetate / acetic acid]
∴acetate/acetic acid = 0.692
so we need moles of acetate = volume *molarity
= 0.5 L * 0.25 M
= 0.125 moles
when the acetate/ acetic acid ratio = 0.692 and moles acetate = 0.125 moles
∴ moles acetic acid = 0.125 moles / 0.692 moles = 0.182 moles
∴ volume use for 0.182 moles = 0.182 / 0.5 = 0.364 L
∴volume of buffer solution = 0.5 L + 0.364L
= 0.864 L
We need to use the following formula
Δ
n= 4 moles
F= constant= 96500C/mol
let's plug in the values.
ΔG= -(4)(96500)(0.24)=
-92640 J or -92.6 kJ
Answer:
Methane + Bromine = (CH4+Br2)
Explanation:
When a mixture of methane and bromine is exposed to ultraviolet light - typically sunlight - a substitution reaction occurs and the organic product is bromomethane. However, the reaction doesn't stop there, and all the hydrogens in the methane can in turn be replaced by bromine atoms. The reaction is a single-step reaction.