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Citrus2011 [14]
3 years ago
14

SCIENCEEEE!!!! I NEED HELPPP

Chemistry
2 answers:
seraphim [82]3 years ago
4 0
Both are physical changes.

Hope this helps!! (:
valina [46]3 years ago
3 0
These are both physical changes can I get a brain list please
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Help me plz #10 would appreciate it
DaniilM [7]
C I’m pretty sure. I can explain just lmk
7 0
3 years ago
Describe the whole process of Aluminum extraction from bauxite.​
AlekseyPX

Answer:

Extraction of aluminium

Aluminium ore is called bauxite . The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it.

4 0
3 years ago
Read 2 more answers
How many molecules of nitrogen gas are found in 0. 045 L of nitrogen gas at STP?
stepan [7]

Answer:

See below

Explanation:

.045 liter / 22.4  l / mole   * 6.022 x 10^23 molecules/mole   * 2 atoms/molecule  =

( * 2 becuase nitrogen gas is diatomic)

7 0
2 years ago
The discovery of the atomic nucleus, or perhaps better stated the development of theory of the nucleus, is credited to Ernest Ru
Greeley [361]

Answer:

Both of the studies said that the mass of the atom is centered in the nucleus, which is positive, and there are electrons (negative particles) orbiting it. So, Rutheford and Nagaoka discovered that the atom can be divisible and it has an empty space.

But, in the model of Nagaoka, the nucleus was huge, and for Rutherford, the nucleus was really small, and the mass was concentrated. By his experiment with the gold sheets, the theory was appropriated. That's why Rutherford is credited with the discovery of the nucleus. Nagaoka was incorrect in his suppositions.

3 0
3 years ago
Mount Everest is 8847 m high.how many centimeters high is Mount Everest?
a_sh-v [17]

Answer: 884,700 cm

Explanation:

Since we already know how high Mount Everest is in meters, we convert it into centimetres.

I hope you found this answer helpful!!

7 0
3 years ago
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