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Conduction is the transfer of heat from one particle of matter to another.
“I Have 3 Examples Of Convection Provided Below”
“A Pot Sitting On A Hot Burner”
“Picking Up A Hot Cup Of Coffee”
“Feet On Hot Sand”
Answer:
I have the lowest electronegativity of the nonreactive elements. My family name is <em>alkali metals</em>. I am classified as a <em>reactive metal</em>. I have <em>one</em> valence electrons.
Explanation:
Electronegativity refers to the ability of the atoms of an element to attract electrons to itself. Based on their nature, non-metals are electronegative elements whereas metal are electropositive as they have a tendency to give up their electrons rather than attract electrons to themselves.
In the periodic table of elements, non-metallic character, and hence, electronegativity increases from left to right across a period, and decreases down a group. The most electropositive element is fluorine. On the other hand, electropositivity decreases across a period from left to right but increases on going down a group. Hence, the most electropositive element is Francium. This also means that Francium is the least electronegative element,
francium belong to the group 1A of the periodic table which are the most reactive metals. The family of group 1A elements are known as alkali metals. They possess only one valence electron which they easily give up to form univalent positive ions or cations. Francium is a radioactive element.
The number of moles of KF needed to prepare the solution is 3 moles
<h3>What is molarity?</h3>
Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:
Molarity = mole / Volume
<h3>How to determine the mole of KF </h3>
- Volume = 2500 mL = 2500 / 1000 = 2.5 L
- Molarity = 1.2 M
- Mole of KF =?
Molarity = mole / Volume
1.2 = mole of KF / 2.5
Cross multiply
Mole of KF = 1.2 × 2.5
Mole of KF = 3 moles
Learn more about molarity:
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Answer:
True
Explanation:
Because fossil fuels are non-renewable resources and that means it take thousands of years to form. Also, it harm the environment and create this climate change. While renewable resources, however, don't take thousand of years to form and it do not harm the environment.
