Answer:
183N
Explanation:
183N we have to add both mass
During a chemical reaction, the mass of the products is always equal to the mass of the reactants.
Answer:
10. Embryology is the branch of biology and medicine concerned with the study of embryos and their development.
11. I think the answer is, Both humans and whale embryos have a tail and a backbone (I'm not sure).
12. Basilosaurid, any member of the family Basilosauridae, an early group of whales that lived from the middle Eocene to the late Oligocene Epoch (about 41 million to 23 million years ago).
13. Protocetids had long snouts, large eyes, and their nasal opening was farther caudally than in earlier archaeocetes.
14. Two ways we know that Maiacetus was a whale re:
1) Their skeletons have all been found among fossils of sea-creatures which suggests they lived in the sea.
2) Their hip bones were strong enough to walk on land, but their short legs combined with long flat fingers and toes suggest they would have had difficulty walking.
15. The name Maiacetus means Mother Whale. Maiacetus is significant because of how well the skeletons were preserved.
Hope this helps! :D
The electron configuration of sodium in excited state is 
Atomic number of sodium is 
i.e. it contains electrons.
The electron configuration of sodium in ground state is 
When sodium is in excited state the valance electron of 
subshell jumps to 
subshell on gaining energy.
The condition of sodium is very unstable and thus the outermost electron in subshell will release energy and return back to its original orbital (that is ).
This will release equal energy which it absorbed to jump to subshell producing yellow light.
To know more about electron configuration
brainly.com/question/13497372
#SPJ4
Answer:
13. 
This is a double displacement reaction, not an acid-base reaction
14.
15. 
16.
17.
18.
19.
20.
21. 
22.
23.
24. 
Explanation:
All acid-base reaction have the same products, 
and a salt. Whit this in mind the acids would the compounds that produces the hydronium ion 
and the bases would be the compounds that produces the hydroxide ion 
