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Kryger [21]
3 years ago
9

You will learn that matter is neither created nor destroyed in any chemical change. Is this statement a theory or a law?

Chemistry
1 answer:
melomori [17]3 years ago
4 0
It's a law because the theory is just a statement
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Help Plzzz. (will vote brainliest)
kupik [55]
The difference would be that Mercury has a denser, warmer atmosphere and Earth has a not that dense and gassy atmosphere. The Earth's atmosphere also has a lot of layers while Mercury's doesn't. Those would be the reasons for them both being different. Hope this helped!
5 0
4 years ago
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Which part of atom determine the identity of a atom
aksik [14]

Answer:

protons

Explanation:

the number of protons in 1 atom determine the identity

5 0
3 years ago
A statement that describes what scientists expect to happen every time under a given set of conditions is call a scientific
ololo11 [35]

Answer:

law

Explanation:

it is called a scientific law

5 0
3 years ago
When 4.41g of phosphoric acid (H3PO4) react with 9.25g of barium hydroxide, water and insoluble barium phosphate form. [T/I-7] a
AnnZ [28]

Answer:

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

Explanation:

Let's consider the unbalanced equation that occurs when phosphoric acid reacts with barium hydroxide to form water and barium phosphate. This is a neutralization reaction.

H₃PO₄(aq) + Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

We will balance it using the trial and error method.

First, we will balance Ba atoms by multiplying Ba(OH)₂ by 3 and P atoms by multiplying H₃PO₄ by 2.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

Finally, we will get the balanced equation by multiplying H₂O by 6.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

3 0
3 years ago
What is the shape of an ammonia molecule?
Volgvan

The shape of an ammonia molecule is trigonal pyramidal (see the image below).

The N atom is at the top of the pyramid and the three H atoms are at the corners of a triangular base.

3 0
3 years ago
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