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kherson [118]
3 years ago
5

How can density be used to identify an object?

Chemistry
1 answer:
blagie [28]3 years ago
8 0
It will determine the volume of an irregular object like a rock.
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Mass = 25g, Volume = 5mL. What is the density? *
Fantom [35]

Answer:

5ml

Explanation:

m/v

25/5=5

means 25÷5=5

6 0
3 years ago
Why don’t we include the mass of an atoms electrons in the atomic mass?
Daniel [21]

Because Electrons have a negative charge

8 0
3 years ago
The last element in any period always has:
brilliants [131]

Answer: The correct option is The properties of a noble gas.

Explanation: There are 7 periods in the periodic table.

The last element of each period are Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo).

  • The electronic configuration for Helium is 1s^2. For He, The outermost electrons are 2.
  • The electronic configuration for all the other elements is ns^2ns^6 ( where, n = 2, 3, 4, 5, 6 and 7 respectively). For all the other gases, the outermost electrons are 8.

All these elements have stable electronic configuration and are not reactive in nature. Hence, they are considered as noble gases.

Therefore, the last element of each period always have the properties of a noble gas.

4 0
3 years ago
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Help me I hate science so much​
mestny [16]

Answer:

it would be sciemce

Explanation:

yeah because its  hargf

8 0
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