Answer:
The density of the metal is 2.094 g/mL.
Explanation :
Given,
mass of metal sample = 16.63 grams
Volume = 7.94 mL.
Density = ?
Density of the metal can be found by using the formula
Density = Mass/Volume
Substituting the values we get,
density = 16.63/7.94
by solving,
density = 2.094 g/mL.
Answer:
qualitative data—deals with characteristics or qualities expressed in words; displayed in circle and bar graphs
quantitative data—deals with quantities expressed in numbers; displayed with circle, bar, and line graphs as well as histograms and scatterplots
Explanation:
A)2014
B)Cl2
C)Mg
D)Mg2+
The metal loses electrons, and when it becomes Mg2+, it loses two electrons, becoming oxidized. So, the correct option is D.
Initially, the word "oxidation" was used to refer to chemical processes in which a component reacts with oxygen. An illustration of this is the oxidation of magnesium in the formation of magnesium oxide when magnesium and oxygen react.
Antoine Lavoisier used the term "oxidation" to describe the reaction of a material with oxygen. The meaning was later expanded to cover additional reactions in which electron are lost, irrespective of whether oxygen was present, after it was realised that the substance loses electrons when it is oxidised.
In the aforementioned example, the metal loses electrons; specifically, it loses two electrons as it changes from Mg+ to Mg2+, getting oxidized.
Therefore, the correct option is D
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Answer:
Mg ²⁺
Explanation:
Τhe metal loses electrons and in forming Mg²⁺ ,it loses 2 electrons and hence oxidized.
Mg(s) ⇒ Mg²⁺ + 2e⁻
the missing answer choice is 20
The answer is 18
You add each water amount of loose soil and divide by 3
18 i hope this helps
Answer:
It is important because it separates the area that the process is happening from its surroundings, and it's easy to measure and make observations by doing that.
Explanation:
The system is the part of the universe that is separated for study. It has a frontier, which is the limitation of it, and the external area is the surroundings.
In the system the chemical and physical process is happening: reactions are taking place, gas is expanding, heat is being absorbed or lost, etc.
So, to understand the process that is happening, it's necessary to define the system under study because the measurements, analyze, and observation will be easily done.
In an electromagnetic spectrum, when an electromagnetic wave passes from space to matter, some part of the energy is absorbed by the matter and it increases its energy.
The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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In chemistry, increasing the concentration of one of the reactants increases the reaction rate because there are more reactant particles available for successful collisions and subsequent reactions.
In the field of chemistry, the concentration of reactants can significantly impact the rate of a reaction. According to the rate law, the rate of a reaction is directly proportional to the concentration of the reactants. Therefore, if you increase the concentration of one of the reactants, the reaction rate will also increase. This is because there are more particles available to collide and react, which increases the likelihood of successful collisions, thereby accelerating the reaction rate. For example, if you have a cup of tea and you increase the concentration of sugar (one of the reactants), the sugar will dissolve faster, indicating a faster reaction rate.
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