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Ann [662]
3 years ago
6

A girl needs hellpp!!

Chemistry
1 answer:
Gwar [14]3 years ago
7 0

i think the answer is C because it take a Molecular form so im certain the correct answer is c

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Calculate the energy required to ionize a ground state hydrogen atom. report your answer in kilojoules.
hjlf

First we find for the wavelength of the photon released due to change in energy level. We use the Rydberg equation:

1/ʎ = R [1/n1^2 – 1/n2^2]

where,

ʎ is the wavelength

R is the rydbergs constant = 1.097×10^7 m^-1

n1 is the 1st energy level = 1

n2 is the higher energy level = infinity, so 1/n2 = 0

 

Calculating for ʎ:

1/ʎ = 1.097×10^7 m^-1 * [1/1^2 – 0]

ʎ = 9.1158 x 10^-8 m

 

Then calculate the energy using Plancks equation:

E = hc/ʎ

where,

h is plancks constant = 6.626×10^−34 J s

c is speed of light = 3x10^8 m/s

 

E = (6.626×10^−34 J s * 3x10^8 m/s) / 9.1158 x 10^-8 m

E = 2.18 x 10^-18 J = 2.18 x 10^-21 kJ

 

This is still per atom, so multiply by Avogadros number = 6.022 x 10^23 atoms / mol:

E = (2.18 x 10^-21 kJ / atom) * (6.022 x 10^23 atoms / mol)

E = 1312 kJ/mol

3 0
3 years ago
17. Physical properties of a material include all but ________________.
Amiraneli [1.4K]

Answer:

17)c: the reactivity of a metal.

Explanation:

8 0
3 years ago
Why do you think there was a rush to mass-produce penicillin around the time of World War II?
Vladimir79 [104]

Answer:

penicillin could protect mice against infection from deadly Streptococci.

Explanation:

5 0
3 years ago
Read 2 more answers
What are to long term impacts that the concept of matter cannot be destroyed or created
Tcecarenko [31]
As long as matter cannot be destroyed or created , nothing can be gained or lost.

there is zero impact and hence one cannot numerate the impact
8 0
3 years ago
What is the difference between a cation and an anion?
zmey [24]
An anion has a negative charge, while a cation has a positive charge.
3 0
3 years ago
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