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NeX [460]
2 years ago
10

What were the first 5 planets that were observed? Why were those the only ones? Help pls!

Chemistry
1 answer:
pogonyaev2 years ago
4 0
Mercury Venus mars Jupiter Saturn
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miv72 [106K]
The number of atoms in one mole is same in both which is 6 x 10^23 ^23 means power 23
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2 years ago
If you compare the egg to a cell, what did you learn about how water moves into or out of a cell
sleet_krkn [62]

If we compare a cell with an egg there is a major difference between the outer membrane

in case of cell they are bounded by semi permeable membrane  

The semi permeable membrane is a selectively permeable membrane which allows the movement of only solvent molecule and not solute molecules through it.

So water can move into or out of the cell through cell membrane by a special physical process known as osmosis.  

the water will move from a low concentration gradient to high concentration gradient.

4 0
3 years ago
Aluminum has a face-centered cubic unit cell. How many atoms of Al are present in each unit cell
Serjik [45]

Answer:4

Explanation:

As shown in the image attached, a face-centred cubic structure has 8 atoms at the corners and 6 face center atoms.

Each corner atom contributes to eight cell, so per unit cell 1/8 ×8 =1atom

Face center atoms contributes to two unit cells 1/2 × 6=3atoms

Total atoms =3+1=4atoms

Therefore the atoms in Al FCC per unit cell is 4

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Science Question 1: Please Answer!
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