How many moles of carbon dioxide gas can formed formed the combustion of 4 moles of c5h14
Answers
Answer:
n CO2 = 20 mol
Explanation:
balanced reaction:
- 2C5H14 + 17O2 → 10CO2 + 14H2O
∴ n C5H14 = 4 mol
⇒ mol CO2 = ( 4 mol C5H14)*(10 mol CO2/2 mol C5H14)
⇒ mol CO2 = 20 mol
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How many atoms and ions does lithium sulfite have?
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Answers
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Answer:
Sea floor spreading
Explanation:
In case of a divergent plate motion, two plates move away from another. Due to this motion, there occurs separation of the seafloor, resulting in the addition of new materials to the crust along the mid oceanic ridge. This mid oceanic ridge marks the boundary of separation of the oceanic plates. It often generates deep focus earthquakes and forms volcanoes or chains of volcanic arcs.
Thus, the separation of the two plates under water causes seafloor spreading, and the magma fills the space along the mid oceanic ridge.
(b) BaCl2 + K2CO3 BaCO3 + 2KCl
(c) NiCO3 NiO + CO2
(d) Cl2 + 2NaBr 2NaCl + Br2
Answers
Answer: The correct answer is Option b.
Explanation:
Double displacement reactions are defined as the reactions in which exchange of ions takes place.
For the given options:
Option a:
This is an example of synthesis reaction.
Option b:
This is an example of double displacement reaction.
Option c:
This is an example of decomposition reaction.
Option d:
This is an example of single displacement reaction.
From the above information, the correct answer is Option b.
Ba Cl2 + K2 CO3 ---> Ba CO3 + 2K Cl
A B C D A D B C
melting and sublimation
condensation and vaporization
sublimation and boiling
Answers
Answer:
Condensation and vaporization
Explanation:
At a given temperature, molecules of a liquid move into the gas phase (vaporization) and the molecules of the vapour can move back into the liquid phase (condensation).
Answer:
condensation and vaporization
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A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.
For example, if a piece of paper is cut up into small pieces it still is paper. This would be a physical change in the shape and size of the paper. If the same piece of paper is burned, it is broken up into different substances that are not paper.
When heat is given off in a chemical change or reaction, it is called an exothermic reaction. When heat is absorbed in a chemical change or reaction, it is called an endothermic reaction. The speed at which chemical reactions take place depend on the temperature pressure and how concentrated the substances involved in the chemical reaction are. Sometimes substances called catalysts are used to speed up or help along a chemical reaction. Light is helpful in the processing of film.