A 5)Account for the following:
1) lonisation enthalpy of Nitrogen is greater than that of oxygen. [2]
2) a) What is meant by isoelectronic species? (1)
b) Select the isoelectronic species from the following. N, 02-, F-,
Mg2+, Al2+, Na+ (1)
3)Cl has higher negative electron gain enthalpy than F.
[2]
i) The first ionization enthalpy of Na is less than that of Mg , but its second
ionization enthalpy is more than that of Magnesium
[3]
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a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

it doesn't. it was imagined up in the middle ages.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).