21. The model of DNA below is ready to be copied. Compared to the original double helix, evaluate the copies made during three attempts
of DNA replication List any errors with the replication if they occurred:
Original
А T
T A
C G
С G
G с
A
С
List problems if any:
T
A
G
Replication #1
A T
T A
С
G
С G AND
G С
T А
G С
A
T
С
A
G
T
G
С
С
List problems if any:
Replication #2
A T
T А
С G
С G
G С
T А
G C С
AND
A
T
С
C
G
T
G
T
A
G
G
С
А
С

Who knows nice pfp

Explanation:

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :