It can be a compound or a single element. An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements, butcarbon, hydrogen, nitrogen and oxygen are only a few that make up the largest portion of Earth.
I would say d.
Answer:
When the moon moves between the sun for solar eclipse
When the earth moves between the sun and moon
(Extremely sorry if im wrong)
Explanation:
Answer:
c. c. c c c c c cçcc. ccccccccc
Explanation:
ccc cc
Just multiply 9.5 by Avogadro's number. You get 5.72 x 10^24 atoms.
Solution :
Molecular mass of NaOH is 23 g/mol .
So, number of moles of NaOH is given by :
Now, we know molarity is given by :
Hence, this is the required solution.
