Please help with the question above!
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Answer:
B
Explanation:
B
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For the reaction 4FeCl2(aq) + 3O2(g) → 2Fe2O3(s) + 4Cl2(g), what volume of a 0.945 M solution of FeCl2 is required to react completely with 4.32 ×1021 molecules of O2?
In a redox reaction, the substance that accepts electrons is said to be
What's the word called part of an experiment that changes to observe an outcome?
What is the role if DNA in determining an organism's traits
Answers
no
Nope, cant rust as lead like copper /brass /bronze /muntz metals are non ferrous thus NO rusting is possible
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B) energy and wavelength decrease
C) energy decreases, wavelength increases
D) energy increases, wavelength decreases
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When the frequency of the waves increases, its energy increases, while the wavelength decreases.
• A travelling disturbance, which mediates energy from one place to another is known as a wave.
• The tendency to do work or cause a change is known as the energy.
• Waves can be determined with the help of frequency and wavelength.
• In a given unit of time, the number of complete wavelengths is known as frequency.
• With the increase of the size of wavelengths, its energy and frequencydecreases.
• There are two basic kind of waves, that is, electromagnetic and mechanical waves.
• The waves, which can travel through a medium or a vacuum is known as the electromagnetic waves.
• The waves with long wavelengths comprise less energy than waves with short wavelengths.
Thus, correct answer is option d, that is, energy increases, wavelength decreases.
To know more about:
As the frequency is how many waves pass a fixed point in certain amount of times. This means that the waves get closer together and, therefore, the wavelength decreases. It also means that the wave has more energy.
Answer: D) Energy increases, wavelength decreases
The product of the reaction is MgO. Describe what you observed in the reaction. Then consider the general AB form of a synthesis reaction. Write the chemical reaction, balancing the equation so that there are an equal number of atoms of each type in both the reactants and the product.
Answers
Answer:
2Mg + O₂ ⇒ 2 MgO
Explanation:
When the MgO formation reaction is carried out experimentally, it can be seen that Magnesium a solid that has a metallic luster, when a flame is brought closer so that the oxidation reaction of the metal occurs, it is appreciated that a colored flame is produced white for a few moments (the duration of the flame depends on the initial amount of magnesium) and when the reaction finished, the magnesium became a white solid, opaque and very fragile. This is because Mg reacted with oxygen and magnesium oxide formed, which is the white solid.
Synthesis reactions are those in which two or more reagents combine to obtain a new product compound. The general formula for this type of reaction is:
A + B ⇒ C
In the case of the example of the statement, the reaction form of this synthesis would be:
2Mg + O₂ ⇒ 2 MgO
The equation is matched in such a way that there is the same amount of atoms of each species in both reagents and products, thus respecting the principle of conservation of mass.
Clarification: In the synthesis reaction, oxygen is placed in its molecular form (O₂), because the compound is naturally found, it is a simple substance. Magnesium, on the other hand, is found as a simple substance as atoms.
The reaction between Magnesium and Oxygen produces Magnesium Oxide. The balanced equation is 2Mg + O2 → 2MgO.
In the reaction, Magnesium (Mg) reacts with Oxygen (O) to produce Magnesium Oxide (MgO).
The balanced chemical equation for this synthesis reaction is:
2Mg + O2 → 2MgO
In this equation, there are an equal number of atoms of each type on both sides of the equation, which follows the principle of conservation of mass.
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Answer:
46
Explanation:
Sodium metal has a molar mass of
22.99
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A flashlight battery is an example of a chemical battery, specifically a type of electrochemical cell. It converts chemical energy into electrical energy through a chemical reaction.
Inside the battery, there are two electrodes, typically made of different metals or metal compounds, and an electrolyte solution. When the battery is connected to a circuit, a chemical reaction occurs at the electrodes, resulting in the flow of electrons from one electrode to the other.
This flow of electrons generates an electric current that powers the flashlight or any other device connected to the battery.
The chemical reaction within the battery is reversible, meaning it can be recharged by applying an external electrical current to reverse the reaction and restore the chemical energy within the battery.
In summary, a flashlight battery is an example of a chemical battery because it utilizes a chemical reaction to convert chemical energy into electrical energy for powering electrical devices.
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