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harkovskaia [24]
3 years ago
11

PLS HELP!! WILL GIVE BRAINLY!!

Chemistry
1 answer:
mamaluj [8]3 years ago
8 0

Answer:

2. Mechanical

3. Chemical

4. Mechanical

5. Mechanical

6. Chemical

7. Mechanical

8. Mechanical

9. Mechanical

10. Chemical

Explanation:

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How many moles are in 0.0723 atoms of Iron. Fe?-
Vlada [557]

Answer:

0.012× 10⁻²³ moles of iron

Explanation:

Given data:

Number of moles of iron = ?

Number of iron atoms = 0.0723 atom

Solution:

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

0.0723 atom × 1 mol / 6.022 × 10²³ atoms

0.012× 10⁻²³ mol

8 0
3 years ago
8 bananas weigh 1pound and sale price is 4 pounds for $5. How much it cost me to buy 25 bananas?
asambeis [7]
It should be 3-4 dallors because 8x3 is 24 and that is 3 pounds and you only have one banana left so is supposed to be 3 dallors and change.
8 0
3 years ago
Corrosion is what type of chemical change?
Nostrana [21]
Answer A

Oxidation.

hope this helps!
5 0
3 years ago
write the chemical formula of the following compounds sodium sulfate magnesium chloride aluminum nitrate ammonium sulfate​
tekilochka [14]

Explanation:

Magnesium chloride = MgCl₂

aluminum nitrate= Al(NO₃)₃

ammonium sulfate=( NH₄)₂SO₄

3 0
2 years ago
HELP I NEED HELP ASAPP
Effectus [21]

Answer:

B = A/DH – C

Explanation:

From the question given above, we obtained:

A = D • H(B + C)

Thus, we can obtain B in terms of D, H, A and C by doing the following:

A = D • H(B + C)

A = DH(B + C)

Divide both side by DH

A/DH = B + C

Subtract C from both side

A/DH – C = B + C – C

A/DH – C = B

B = A/DH – C

4 0
2 years ago
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