The density of the metal object=6.0
Given:
Volume of the metal object=1.5ml
Mass of the metal object=9.0g
To find:
Density of the metal object
<u>Step by Step Explanation:
</u>
Solution:
According to the formula, Density of the metal object can be calculated as
Where, m=mass of the metal object
=density of the metal object
v=volume of the metal object
We know the values of v=1.5ml and m=9.0g
Substitute these values in the above equation we get
=9.0/1.5
=6.0
Result:
Thus the density of the metal object is 6.0
When a certain compound is decomposed thermally, it means that the compound is separated into its individual pure elements occurring in nature. In this case, this happens in the presence of heat. The decomposition reaction is:
<span><em>4 NH</em></span><em>₄</em><span><em>ClO</em></span><em>₄</em><span><em> (s) --> 2 N</em></span><em>₂ (g)</em><span><em> + 5 O</em></span><em>₂ (g)</em><span><em> + 6 H</em></span><em>₂</em><span><em>O (g) + 4 HCl (g)</em></span>
Answer:
4.27 g
Explanation:
Number of moles = concentration × volume
Concentration = 0.121 M
Volume = 250 mL
Number of moles = 0.121 M × 250/1000 L
Number of moles = 0.03 moles
Number of moles = mass/molar mass
Mass= Number of moles × molar mass
Mass= 0.03 moles × 142.394 g/mol
Mass = 4.27 g
An electron has a high probability of being in certain regions. Hence, option C is correct.
<h3>What is the meaning of electron cloud?</h3>
The system of electrons surrounding the nucleus of an atom.
The electron cloud model tells us that electrons are found in defined energy states outside of the nucleus of the atom. The lowest possible state for an electron is called its ground state.
The energy levels can only hold a certain number of electrons at any time and the organization of these electrons in the electron cloud is called the atom's electron configuration.
Energy levels describe distances from the nucleus in which electrons can be found. There is a maximum number of electrons that can be found at any particular energy level due to the limitations of its size.
Hence, an electron has a high probability of being in certain regions.
Learn more about the electron clouds here:
brainly.com/question/489097
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