CHEMISTRY HIGH SCHOOL

The fermentation of C6H12O6 will produce CO2 and 1. C3H5(OH)3 2. C2H5OH 3. Ca(OH)2 4. Cr(OH)3

Answers

Answer 1
Answer: Answer is "2 - C₂H₅OH".

Fermentation is a process which is used to produce energy from sugars (glucose, sucrose and fructose) in the absence of oxygen.

Fermentation with the glucose releases energy by producing carbon dioxide (CO₂) and ethanol (C₂H₅OH) as its byproducts.
The reaction is 
           C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ + energy

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When the Sun’s radiant energy falls on Earth’s oceans, it causes water to change state by evaporating. Which form of energy does water vapor have?

Answers

Answer:

The correct answer is chemical potential energy.

Explanation:

When the radiation energy of the Sun falls on the surface of the oceans, it makes the water to modify its state by undergoing evaporation. The form of energy exhibited by the water vapor is chemical potential energy.  

When the energy from the Sun falls on the surface of the water, a change in the state takes place, that is, from liquid to gas. This gas elevates above in the form of water vapor, and this is a chemical change. This vapor possesses the tendency to get transformed into other forms. Thus, the energy present within the water vapor is known as chemical potential energy.  
Water vapor possesses latent energy. this form of heat energy is the force that drives the water cycle in nature.

An arrow is fired at a target on a high wall. Which statement correctly describes the change in the energy of the arrow as it moves toward the target?The potential energy and kinetic energy remain the same.
The potential energy decreases as kinetic energy increases.
The kinetic energy decreases as potential energy increases.
The kinetic energy remains at zero, but potential energy increases.

Answers

Answer : Option C) The kinetic energy decreases as potential energy increases.

Explanation : As the target is fired high on the wall, the change in the energy that is observed as the arrow moves towards the target is kinetic energy starts to decrease as the arrow reaches nearer towards the target and the potential energy is observed to increase. So, in short the energy transformation is from kinetic energy from a moving arrow to potential energy when the arrow hits the target.
The kinetic energy decreases as potential energy increases.(C)

Water is called the “universal solvent.” Which statement best explains this description with respect to ionic compounds?

Answers

Answer is: C. Water can dissociate many ionic compounds through ion-dipole interactions.

For example, dissociation of potassium bromide: KBr(aq) → K⁺(aq) + Br⁻(aq).

Some ionic compounds cannot dissociate in water, for example calcium sulfate (CaSO₄), silver chloride (AgCl), lead(II)-carbonate (PbCO₃).

An ion-dipole is electrostatic interaction between a charged ion (cations and anions) and a molecule that has a dipole (in this example water).

Dipole is a separation of positive and negative charges. In water, hydrogen has positive and oxygen has negative charge.
It is called the universal solvent because it can dissolve a wide range of solutes. Generally speaking, water is good at dissolving ions and polar molecules, but poor at dissolving nonpolar molecules. Water molecules are polar, with partial positive charges on the hydrogens, a partial negative charge on the oxygen, and a bent overall structure. The unequal charge distribution in a water molecule allows the interaction with ions.

The total pressure inside a 1.62 cylinder kept at 35°C is 1.15 atm. If the volume of the cylinder drops to 0.74 L and the temperature remains the same, what is the new pressure inside the cylinder?

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By exponential outcome 21934

David says, "Pure honey has nothing else added." Susan says ,"The honey is not really pure. It is mixture of many subsatnces . Who is right? Explain your answer.

Answers

Really, both David and Susan are right; they were using the term "pure" in different ways. David likely meant "pure honey" in the sense that the honey was not altered or had any additives. Susan used pure as in a "pure substance" in chemistry. Susan is also right, because honey is a medley of carbohydrates, proteins, amino acids, and vitamins and minerals. Chemically, honey is not a pure substance- it's a mixture.

Which question would be scientifically reasonable for a student to ask about the layers of the Earth? A. Why does the temperature decrease as you move from the crust to the core?
B. Why does density increase as you move from the crust to the core?
C. Why does density decrease as you move from the crust to the core?
D. Why is the inner core liquid iron and the outer core solid iron?

Answers

Answer:

The answer is C

Explanation:
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