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zhannawk [14.2K]
3 years ago
5

Fossil fuels were formed when living things (plants and animals) died and their remains were broken down. This is an example of

_______.
A. Combustion
B. Decomposition
C. Photosynthesis
D. Cellular Respiration
Chemistry
1 answer:
Anettt [7]3 years ago
5 0
This answer is B. Decomposition
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If a reaction occurs, what will be the products of the unbalanced reaction below?
castortr0y [4]

Explanation:

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Identify the reactants and the products in this chemical equation.<br><br> 2Fe2O3 + 3C → 4Fe + 3CO2
aivan3 [116]

Answer:

Fe₂O₃ and C are reactants

Fe and CO₂ are products

Explanation:

Reactants:

Chemical species that are present on left side of chemical reaction equation are called reactants.

Product:

Chemical species that are present on right side of chemical reaction equation are called product.

Chemical equation:

2Fe₂O₃ + 3C  →  4Fe + 3CO₂

In this reaction 2 mole of iron oxide is react with three moles of carbon and produced four moles of iron and three moles of carbon dioxide. There are equal numbers of atoms of all elements present on both side of chemical reaction so this reaction follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

7 0
3 years ago
Which element is in group 2 and period 7 of the periodic table
bekas [8.4K]
Hey
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     ~Spades15
3 0
4 years ago
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