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Delvig [45]
4 years ago
13

What is heating and cooling

Chemistry
1 answer:
melisa1 [442]4 years ago
6 0

make or become hot or warm is heating.

cooling is to become colder or cool down from a higher temp.

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2 atm of pressure would be equal to ____________ mmHg.
Ahat [919]

Answer:

1520 mmHg

Explanation:

Let's solve this by a factor conversion:

1 atm → 760 mmHg

2 atm . 760 mmHg / 1 atm = 1520 mmHg

5 0
3 years ago
Which of the following are likely to form an ionic bond? silicon and oxygen oxygen and oxygen carbon and hydrogen magnesium and
Tasya [4]

Answer: The bond formed between magnesium and oxygen is an ionic bond.

Explanation:

An ionic bond is formed when an atom transfer its valence electrons to another atom.

Whereas, a covalent bond is formed by the sharing of electrons between the atoms.

Silicon and oxygen forms silicon dioxide. Silicon has 4 valence electrons which are shared with each oxygen atom. Hence, silicon and oxygen forms a covalent bond.

Oxygen and oxygen shares two pairs of electrons therefore, a covalent bond is formed between oxygen and oxygen.

A covalent bond is formed between carbon and hydrogen as carbon has 4 valence electrons which are shared with four hydrogen atoms.

Magnesium has 2 valence electrons which are transferred to the oxygen atom in order to complete its octet.

Therefore, the bond formed between magnesium and oxygen is an ionic bond.

3 0
4 years ago
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Pavel [41]
It is a principle that states that mass cannot be loss or gained in a chemical reaction.
5 0
3 years ago
In which changes do the particles move further apart?<br> W<br> Х<br> gas liquid solid<br> Y<br> Z
lesantik [10]
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Metals are cunductor of heat and electricity prove this statement​
Grace [21]

Answer:Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.

Explanation:

7 0
3 years ago
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