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mojhsa [17]
3 years ago
7

Which number indicates the energy level of an atom's valence electrons? answers?

Chemistry
2 answers:
NNADVOKAT [17]3 years ago
6 0
The orbital number indicates the energy lvl
Liula [17]3 years ago
5 0

Answer:

the period number

Explanation:

a p e x :)

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Rasek [7]

Answer:

Was the metal oxidized?

Cu = No | No | No

Fe = Yes | No | No

Zn = Yes | Yes | No

Oxidizing Agent:

Cu = None | None | None

Fe = Cu, NO3 | None | None

Zn = Cu, NO3 | Fe, NO3 | None

4 0
3 years ago
For the following, answer Acid, Base, Both, or Neither
Fynjy0 [20]

Answer:

1. Both

2. Acid

3. Acid

4. Base

5. Acid

6. Neither

7. Neither

8. Base

9. Acid

Explanation:

In Chemistry, a chemical compound can be either a base or an acid.

An acid reacts with metals to produce bubbles of hydrogen gas and it also reacts with carbonates while a base feels slimy to the touch. They both can change the color of a litmus paper.

Base has a sour taste while acids have a bitter taste (please do not use this characteristic to test for an acid in the laboratory)

6 0
3 years ago
Is frying an egg a physical or chemical change
Lemur [1.5K]
Chemical change. The heat from frying an egg causes the egg's protein to change permanently in texture and in appearance through a process. 
7 0
2 years ago
In order to perform a chemical reaction, 225 mL of 0.500 M lead (II) nitrate is required. How much 5.00 M stock solution is requ
vladimir1956 [14]

Answer:

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Explanation:

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4 0
3 years ago
What is the atomic number for an element whose mass number is 78,
Ann [662]

Answer:

protons = atomic numbermass number = protons + neutronsatomic number = mass number - neutrons = 78-38 = 40

Explanation:

5 0
2 years ago
Read 2 more answers
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