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Varvara68 [4.7K]
3 years ago
8

A ball sits on top of a hill. The wind blows and the ball begins rolling down the hill. What caused the ball to start moving?

Chemistry
2 answers:
romanna [79]3 years ago
7 0

Answer:

A

Explanation:

I don't have an exact explanation, I remember learning about it though.

ELEN [110]3 years ago
4 0
The answer should be a
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What mass of Iron (III) acetate will be produced when 1.50 grams of iron reacts in acetic acid?
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Answer:

2Fe + 6HC2H3O2 → 2Fe(C2H3O2)3 + 3H2

Explanation:

There you go

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2 years ago
Mg(s) + HCl (l) --> H2 (g) +MgCl2 (s) A student conducted an experiment with 2g of magnesium and 3 mL of 6M hydrochloric acid
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2 years ago
The atomic number tells us how many __ or __ an element contains.
CaHeK987 [17]
Answer:-
Electrons or Protons

Explanation:-
Atomic number (Z) is defined as:
>>“The total number of protons in the nucleus of an atom is called atomic number”. All atoms of an element have the same number of protons and electrons.
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Example:
For instance, Hydrogen has the Atomic number(Z) 1.
Helium has the atomic number 2.
Oxygen has the atomic number 8.
| Note | Atomic number is represented by “Z”. And some ppl don’t consider the 2nd definition it’s upto u to do both or the standard one.

5 0
3 years ago
How do atoms make molecules?
bazaltina [42]

Explanation:

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5 0
2 years ago
What is metallic bonding , properties and everything about it?
Elodia [21]
Metallic bonding

The particles in a metal are held together by metallic bonds.

High melting and boiling points

Metallic bonds are strong and a lot of energy is needed to break them. This is why metals have high melting points and boiling points.

Conducting electricity

Metals contain electrons that are free to move in the metal structure, carrying charge from place to place and allowing metals to conduct electricity well.

Metallic bonding - Higher tier

Metallic bonding is the strong attraction between closely packed positive metal ions and a 'sea' of delocalised electrons.

3 0
3 years ago
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