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emmainna [20.7K]
3 years ago
15

A light-year measures the distance a light beam can travel in one year.

Chemistry
1 answer:
Brilliant_brown [7]3 years ago
8 0

Answer:B

Explanation:

You might be interested in
Magnesium is able to ____ copper, and copper is able to ____ magnesium.
sveticcg [70]

Answer:

Explanation:

The oxidation reduction reactions are called redox reaction. These reactions are take place by gaining or losing the electrons and oxidation state of elements are changed.

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Oxidizing agents:

Oxidizing agents oxidize the other elements and itself gets reduced.

Reducing agents:

Reducing agents reduced the other element are it self gets oxidized.

In given example,

Magnesium is able to <u>reduced</u> the copper and copper is able to <u>oxidized</u> the magnesium.

Zinc is able to <u>oxidized</u> the magnesium and magnesium is able to <u>reduced</u> the zinc.

Copper is able to <u>oxidized</u> the zinc and zinc is able to <u>reduced</u> the copper.

4 0
3 years ago
I need help on thiss
Sergio039 [100]

The reaction is not balanced

<h3>Further explanation</h3>

Given

Reaction

2Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

Required

The number of atoms

Solution

In a balanced chemical equation, the number of atoms in the compound that reacts (the reactants and products) will have the same number

Reactants : Fe(s)+O₂(g)

Fe = 2 atoms

O = 3 x 2 = 6 atoms

Products : Fe₂O₃(s)

Fe = 2 x 2 = 4 atoms

O = 2 x 3 = 6 atoms

The reaction is not balanced because the number of Fe atoms is not the same

The balanced reaction should be:

4Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

8 0
3 years ago
Tobacco's main ingredient is nicotine,alcohol,tar,cigarettes?
Fed [463]
The correct answer is nicotine. It is the main ingredient in a tobacco. Nicotine is an addictive substance thus overuse of the substance will lead to addiction. It acts as a stimulant and a depressant. Tobacco can be dried for smoking and can also be consumed directly.
3 0
4 years ago
What element is NaCl?
ale4655 [162]
Sorry but NaCl is a ionic compound not an element though it's made up of two elements sodium and chlorine
4 0
3 years ago
Read 2 more answers
Lab equipment scavenger hunt
Yuliya22 [10]

Answer:

i spy with my little eye a bill nye the science guy

5 0
3 years ago
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