Ba: 2
Al: 3
P: 5
Se: 6
Br: 7
K: 1
Hope this helps!
It is a mixture because it is made up of three different kinds of minerals, feldspar, quartz, and mica which are mixed together<span>
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Answer:
prokaryot cells doesn't have core or kernel like archeabacteria and eubacteria , but eukaryotes have it .
Explanation:
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA
Answer:
c
Explanation:
c first quarter waxing half moon
Answer:
1024Å
Explanation:
The Rydberg equation is an empirical relationship equation expressed by Balmer and Rydberg which is given as:
1/λ = .............................(1)
where is the Rydberg constant given as , n is the transition level and the subscript f and i show the final and initial level numbers respectively. λ is the wavelength.
= 1
Using equation (1), we have
1/λ
=
=
=
= - 9763300
λ =
=
We should note that the negative sign we have is as a result of photon absorption whereby the hydrogen atom gains energy to undergo a transition from the lower energy level to a higher one. Wavelength does not have a negative value.
To convert to Å, we have
λ = = 1024Å
Therefore the wavelength of the photon in Å is 1024Å