Explanation: We use a different element in the chemical equation.
We explain by a example
In this equation, we use the two elements Na and Cl.
Now, we count the number of atoms present on one side 2 atoms of Na and 2 atoms of Cl then the total numbers will be 4 .
But , we use a molecular formula then we count the number of each element of the molecular formula.
Answer:
Everything that has mass has gravity. The greater the amount of mass, the greater the gravity. And the closer objects are to each other, the stronger their gravitational pull is. The reason we have weight is because of the gravitational pull on our bodies (our mass) by the Earth.
Explanation:
Answer:
Everything that has mass has gravity. The greater the amount of mass, the greater the gravity. And the closer objects are to each other, the stronger their gravitational pull is. The reason we have weight is because of the gravitational pull on our bodies (our mass) by the Earth.
Explanation:
Answer: Doppler effect
Explanation:
The Doppler effect refers to the change in a wave perceived frequency when the emitter of the waves, and the receiver (or observer in the case of light) move relative to each other.
In other words, it is the variation of the frequency of a wave due to the relative movement of the source of the wave with respect to its receiver.
Another important aspect is that the effect occurs in all waves (including light and sound). However, it is more noticeable to humans with sound waves.
The Doppler effect is the apparent change in frequency of waves due to the motion of a source.
The amount of matter contained in a given volume for a substance is called density. The correct answer is density.
Density is a physical property of matter that describes how much mass is present in a given volume. It is typically expressed in units such as kilograms per cubic meter (kg/m³) or grams per milliliter (g/mL).
The density of a substance is determined by its mass and volume and can be used to identify and compare different materials.
Therefore, The amount of matter contained in a given volume for a substance is called density. The correct answer is density.
To know more about the density:
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Answer:
Density
Explanation:
The amount of matter in a substance is its mass. In order to calculate the amount of matter in a given volume of a sample, you will use the density equation: density = mass/volume. ... The density of the elements are known and can be looked up in charts.
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Answer:
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B electromagnetic energy
C mechanical energy
D nuclear energy
Gasoline stores chemical energy, which can be transformed to other types of energy via chemical reactions, such as the combustion in a car engine.
The energy encapsulated within gasoline can be precisely characterized as chemical energy. This type of energy is encapsulated within the chemical bonds of various compounds, encompassing molecules and atoms. It is significant to note that chemical energy, as a versatile energy form, can be both liberated and harnessed as a source of power in diverse applications.
In the case of gasoline, it represents a potent reservoir of chemical energy. When gasoline undergoes combustion in the engine of a car, it engages in a chemical reaction. This reaction leads to the release of the energy contained within the chemical bonds of gasoline molecules. This released energy manifests in the form of mechanical power, propelling the vehicle, and heat energy, which warms the engine and the surrounding environment. In this process, gasoline's chemical energy is converted into mechanical and thermal energy, illustrating the dynamic interplay between different forms of energy in our daily lives.
The precise understanding of chemical energy's role in powering engines and facilitating various industrial processes underscores the fundamental principles of energy transformation and utilization, forming the basis of many technological advancements and applications.
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