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Gelneren [198K]
3 years ago
15

_______ are used because they're economical, easy to process, easy to transport, and the infrastructure exists for their storage

and dissemination. Question 12 options: A) Electrical fuels B) Solar fuels C) Fossil fuels D) Biofuels
Chemistry
1 answer:
eimsori [14]3 years ago
5 0

Explanation:

My answer is option D)Biofuels

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When a mixture of oxygen and hydrogen is ignited in a test tube, the reaction shown occurs. Hydrogen + Oxygen → Water + Energy S
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Answer:

products

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In chemistry, chemical reactions is the combination of two or more substances to yield other substances. The substances that react is called REACTANTS while the substances formed after the reaction is called PRODUCTS.

According to this question, a mixture of oxygen and hydrogen is ignited in a test tube as follows:

Hydrogen + Oxygen → Water + Energy

In this reaction, the substances being combined (usually found on the left side of the equation) are hydrogen and oxygen. Hence, oxygen and hydrogen are REACTANTS. Also, the substances produced as a result of the reaction is water (H2O). The PRODUCTS of the reaction is WATER.

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A major component of gasoline is octane (C8H8). When liquid octane is burned in air it reacts with oxygen (O2) gas to produce "0
qwelly [4]

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0.0063 mol

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Step 1: Write the balanced combustion equation

C₈H₁₈(l) + 12.5 O₂(g) ⇒ 8 CO₂(g) + 9 H₂O(g)

Step 2: Establish the appropriate molar ratio

According to the balanced equation, the molar ratio of C₈H₁₈ to CO₂ is 1:8.

Step 3: Calculate the number of moles of C₈H₁₈ needed to produce 0.050 moles of CO₂

0.050 mol CO₂ × 1 mol C₈H₁₈/8 mol CO₂ = 0.0063 mol C₈H₁₈

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3 years ago
MULTIPLE CHOICE QUESTION
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Answer:because some elements had not been discovered yet

Explanation:I juss took the Ed puzzle

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