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suter [353]
2 years ago
12

H2O trong hóa học là gì? Ngoài đời là gì?

Chemistry
1 answer:
Feliz [49]2 years ago
4 0

Answer:

Ký hiệu hóa học (xem thêm ký hiệu) cho nước. Mỗi phân tử nước chứa hai nguyên tử hydro (H) liên kết với một nguyên tử oxy (O).

The chemical symbol (see also symbol) for water. Each molecule of water contains two atoms of hydrogen (H) joined to a single atom of oxygen (O).

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Which section of the reaction represents the products?<br> A) a <br> B) b <br> C) c <br> D) d
vladimir2022 [97]
The answer will be D because the reaction is what's first(A) and then it is the product that comes out.
6 0
3 years ago
Read 2 more answers
1) Calculate the empirical formula of a compound with 36g of carbon and 96g of oxygen.
grandymaker [24]

Answer:

C4H6

Explanation:

See attached table

Convert each of the masses into moles by dividing the mass by the molar mass of that element.  That yields 3.83 moles of C and 6 moles of O.  I rounded up the C to 4 moles to result in an empirical formula of C4H6

5 0
2 years ago
The energy needed to remove an electron is called ionization energy.
salantis [7]
<h2>                             Emma here<em>!</em></h2>

Answer:

im pretty sure its decreases going across a row (left to right)

Explanation:

As you move from left to right across a period on the periodic table the size of an atom will decrease

<h3>Hope this helps<em>! </em>Have a nice day<em>!</em></h3>
7 0
3 years ago
A burner on a stove produces temperature. thermal energy. hotness. fire energy.
Aleksandr [31]

Question:

The options are;

a. Temperature

b. Thermal Energy

c. Hotness

d. Fire Energy

Answer:

The correct option is;

b. Thermal energy

Explanation:

A burner on a stove produces thermal energy which is used to raise the temperature of the metal container (kettle, pot or pans) in which items are placed for heating.

Thermal energy is the internal energy of the system given off as heat which when transferred from one body to another causes the temperature of the receiving body to rise. Thermal energy in a burner is given off when the gaseous fuel reacts or burns in the presence of or with oxygen to produce carbon dioxide and water vapor in an exothermic reaction.

4C + 5H₂ + 13/2O₂ (-125 kJ) → C₄H₁₀ + O₂ → CO₂ + H₂O (-2877 kJ).

4 0
3 years ago
Read 2 more answers
How is the atomic mass of an atom calculated?
azamat
Adding the number of protons by the number of neutrons
8 0
2 years ago
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