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alex41 [277]
3 years ago
12

The meaning of atoms

Chemistry
2 answers:
nikdorinn [45]3 years ago
5 0

Answer:

Basic unit of a chemical element

Explanation:

REY [17]3 years ago
4 0

Answer:

They make up all matter.

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Carbon has an atomic number of 6. How many electrons are in a carbon atom’s second energy level?
matrenka [14]
Carbon is an atom so electrons=protons 
<span>First shell has 2 electrons and the next 8 so with 6 electrons the first shell fills and 4 are left to go into the 2th shell.</span>
8 0
3 years ago
Read 2 more answers
i wanna know why my mom seems to rather- dislike me?- i mean like is it horomonal issues or whatever?! ;_; im confus3d here. can
m_a_m_a [10]

Explanation:

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5 0
2 years ago
Please help: A 0.200 M NaOH solution was used to titrate a 18.25 mL HF
algol [13]

The molar concentration of the original HF  solution : 0.342 M

Further explanation

Given

31.2 ml of 0.200 M NaOH

18.2 ml of HF

Required

The molar concentration of HF

Solution

Titration formula

M₁V₁n₁=M₂V₂n₂

n=acid/base valence (amount of H⁺/OH⁻, for NaOH and HF n =1)

Titrant = NaOH(1)

Titrate = HF(2)

Input the value :

\tt 0.2\times 31.2\times 1=M_2\times 18.25\times 1\\\\M_2=0.342

7 0
3 years ago
What indicates that a chemical change has occurred?
ki77a [65]
Many things could indicate that a chemical change has occurred. The release of a gas, or bubbling, etc. Just be careful not to mix it up with physical changes. A chemical change means that the chemical structure is different. You can reverse a physical change, but you cannot reverse a chemical reaction. 
5 0
3 years ago
Bu teleskopla ilgili olarak öğrenciler yorumlar yapıyor.
mel-nik [20]

Answer:

по английски пожалуйста

Explanation:

7 0
3 years ago
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