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pshichka [43]
3 years ago
5

Which substance can be broken down by a chemical change

Chemistry
2 answers:
denis23 [38]3 years ago
8 0
Basically everything.
ELEN [110]3 years ago
5 0
Lots of substances. Rocks, metals, minerals, you name it.
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The number of Al atoms in 0.25 mol of Al2(SO4)3​
Harrizon [31]

Answer:

3.011 × 10²³ atoms of Al

Explanation:

Given data:

Number of moles of Al₂(SO₄)₃ = 0.25 mol

Number of atoms of Al = ?

Solution:

In one mole of Al₂(SO₄)₃  there are 2 moles of Al.

In 0.25 mol × 2 = 0.5 mol

1 mole of any substance contain 6.022 × 10²³ atoms.

In 0.5 moles of Al:

1 mole contain 6.022 × 10²³ atoms.

0.5 mol × 6.022 × 10²³ atoms/ 1 mol

3.011 × 10²³ atoms

4 0
3 years ago
Some carpets have thin copper wires running through them. The student is less
Luba_88 [7]

Answer:

See below.

Explanation:

Because copper is a very good conductor of electricity so it will likely conduct any electricity away from the person.

8 0
4 years ago
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What is the approximate wavelength of visible light?
Anestetic [448]

It is approximately 400 - 700 nanometres.

Hope this helps.

r3t40

3 0
3 years ago
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What is the ground state electron configuration for magnesium?
Stella [2.4K]
Magnesium :

<span>[Ne] 3s²</span>

Answer A

hope this helps!

5 0
3 years ago
Help needed ASAP, I will mark your answer as brainliest.
Liono4ka [1.6K]
I think the answer is C I think that bc I added 3 and the 2 which made it H5 and than multipled the 3 and the 2 which made it C6 than Cl
7 0
3 years ago
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