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Nana76 [90]
3 years ago
12

Which fossil fuel is made when plants from swamps are covered, pressed, and heated for millions of years? A Coal B Petroleum C N

atural Gas D Nuclear
Chemistry
2 answers:
Naddik [55]3 years ago
7 0

Answer:

A: COAL

Explanation:

Coal was created hundreds of millions years ago. When prehistoric plant life died and sank to the bottom of the swamp and was covered by layers of sediment.

erastova [34]3 years ago
6 0

Answer:

Coal

Coal was formed hundreds of millions of years ago when prehistoric plant life died and sank to the bottom of swamps and was covered by layers and layers of sediment and rock. The increased pressure and heat of the remains, turned into coal.

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All organisms need oxygen to survive
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What is the mass percent of 6.8 of sucrose in 38.4 grams of water
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The answer is 83% percent
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a_sh-v [17]

The reaction is a synthesis reaction.

<h3>What are synthesis reactions?</h3>

Synthesis reactions are one of the numerous reactions in chemistry. These kinds of reactions involve the combination of two atoms of different elements resulting in the formation of new compounds.

Synthesis reactions are sometimes referred to as combination reactions, simply because they have to do with the combination of two or more atoms of different elements into a single compound.

The different elements that combine are referred to as the reactants while the result of the combination is known as the product.

For example: A + B --> AB

In the illustrated reaction, N2 combined with H2 to form NH3. N2 and H2 gases are the reactants while NH3 is the only product formed from the two reactants.

This is a good example of a synthesis/combination reaction.  

More on synthesis reactions can be found here: brainly.com/question/24936069

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2 years ago
The solubility of k2cr2o7 in water is 125 g/l at 20 °c. a solution is prepared at 20 °c that contains 6.0 grams of k2cr2o7 in 50
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The solubility is the guide to the maximum amount of solute that can be dissolved in a certain amount of solvent at a certain temperature to make a saturated solution. Any amount less than this would result to unsaturated, while any amount more would result to saturated.

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The combustion method used to analyze for carbon and hydrogen can be adapted to give percentage N by collecting the nitrogen fro
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