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Bezzdna [24]
3 years ago
13

Help out this a quick one

Chemistry
1 answer:
Gemiola [76]3 years ago
6 0

Answer:

Climate

Explanation:

The 3 pieces of evidence are fossils, rocks, and mountain ranges all are included except climate

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What is the key characteristic of an oxidation–reduction reaction?
Dmitriy789 [7]

Answer: C. Electrons are exchanged

Explanation:

Oxidation-Reduction reaction (Redox) is a type of chemical reaction in which there is a transfer of electrons between the reacting substance.

In this type of reaction, one of the reacting substance, called the Reducing  Agent, undergoes Oxidation (loss of electrons), while the other reacting substance, called the Oxidising Agent ,undergoes Reduction (gains electron).

4 0
3 years ago
Balancing Equations
AnnZ [28]
This is going to take a while..

1. 2AgI + Na2S --> Ag2S + 2NaI

2. Na3PO4 + 3HCl --> 3NaCl + N3PO4

3. Ba3N2 + 6H2O --> 3Ba(OH)2 + 2NH3

4. TiCl4 + 2H2O --> TiO2 + 4HCl

5. 3CaCl2 + 2Na3PO4 --> Ca3(PO4)2 + 6NaCl

6. 2NaBr + Cl2 --> 2NaCl + Br2

7. Mg(OH)2 + 2HCl --> MgCl2 + 2H2O

Hopefully that helps.
5 0
3 years ago
Aluminum sulfate is added to tripotassium phosphate. What kind of chemical reaction is this?
alina1380 [7]

Answer:

Double Replacement

Explanation:

Let's consider the following balanced reaction that occurs between aluminum sulfate and tripotassium phosphate.

Al₂(SO₄)₃ + 2 K₃PO₄ ⇒ 2 AlPO₄ + 3 K₂SO₄

This is a double replacement reaction because both salts exchange their cations and anions. So, PO₄³⁻ takes the place of SO₄²⁻ in Al₂(SO₄)₃ and SO₄²⁻ takes the place of PO₄³⁻ in K₃PO₄.

7 0
3 years ago
Does oxygen react with water?
Dmitrij [34]

Answer:

Oxygen does not react with itself, nitrogen, or water under normal conditions. Oxygen does, however, dissolve in water at 20 degrees Celsius and 1 atmosphere. Oxygen also does not normally react with bases or acids.

7 0
3 years ago
Why do we use acid during the detection of halogens​
ohaa [14]

Answer:

Nitric acid decomposes sodium cyanide and sodium halide. else, they precipitate in test and misguide the result. Therefore, dilute nitric acid is added before testing halogens to expel all the gases if evolved.

8 0
2 years ago
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