Answer:
Light can be reflected, transmitted, or absorbed. You have read that EM waves can interact with a material medium in the same ways that mechanical waves do.
Explanation:
<h3>
Answer: five cause </h3>
The number of energy levels of zirconium is 5, and I know this because it is located in family five. Families are the rows across on the periodic table. The family number is always equal to the number of energy levels.Zirconium: properties of free atoms. Zirconium atoms have 40 electrons and the shell structure is 2.8.
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Explanation:
One oxygen atom shares two electron with two hydrogen atoms in this way water molecules are formed. The bond between oxygen and hydrogen is covalent bond.
<h3>What is covalent bond ?</h3>
An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond. Bonding pairs or sharing pairs are the names given to these electron pairs.
Covalent bonding is the stable equilibrium of the attractive and repulsive forces between atoms when they share electrons.
According to the amount of shared electron pairs, there are three different forms of covalent bonds. single covalent bond is one type of covalent bond. covalent double bond and covalent triple bond.
Thus, option B is correct .
To learn more about covalent bond follow the link ?
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V₁ = 420 mL
T₁ = 210 K
V₂ = ?
T₂ = 250 K
(Answer is 500 mL)
Answer:
cW = 4.2J/g.k
Explanation:
Heat gained = Heat lost
iron(mc∆€) = water(mc∆€)
mi= 100g
ci = 0.449
∆€i= 150-25 = 125
...
mw= 268.5g
cw = ?
∆€w=25-20 = 5
...
100×0.449×125= 268.5×cw×5
5612.5= 1342.5cw
cw = 5612.5/1342.5
cw= 4.18 ~ 4.2J/g.K