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3 years ago

Are elements with similar chemical properties found in the same period or group on the periodic table?

Chemistry

1 answer:

saveliy_v [14]3 years ago

5 0

Yes, because they are in the same group also because they are similar with the chemical properties

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What happens when an electron absorbs energy?

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When an electron absorbs energy, it will move up from a lower energy level to a higher energy level, called the "excited state" of the negatively-charged subatomic particle.

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At a certain temperature, 0.700 mol SO3 is placed in a 3.50 L container. 2SO3(g)↽−−⇀2SO2(g)+O2(g) At equilibrium, 0.180 mol O2 i

Anestetic [448]

Answer: The value of $K_c$ for the given chemical equation is 0.0457.

Explanation:

Given values:

Initial moles of $SO_3$ = 0.700 moles

Volume of conatiner = 3.50 L

The given chemical equation follows:

$2SO_3(g)\rightleftharpoons 2SO_2(g)+O_2(g)$

I: 0.700

C: -2x +2x x

E: 0.700-2x 2x x

Equilibrium moles of $O_2$ = x = 0.180 moles

Equilibrium moles of $SO_2$ = 2x = $(2\times 0.180)=0.360moles$

Equilibrium moles of $SO_3$ = 0.700 - 2x = $0.700-(2\times 0.180)=0.340moles$

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$Molarity=\frac{Moles}{Volume}$

So,

$[SO_3]_{eq}=\frac{0.340}{3.50}=0.0971M$

$[SO_2]_{eq}=\frac{0.360}{3.50}=0.103M$

$[O_2]_{eq}=\frac{0.180}{3.50}=0.0514M$

The expression of $K_c$ for above equation follows:

$K_c=\frac{[SO_2]^2[O_2]}{[SO_3]^2}$

Plugging values in above expression:

$K_c=\frac{(0.0971)^2\times 0.0514}{(0.103)^2}\\\\K_c=0.0457$

Hence, the value of $K_c$ for the given chemical equation is 0.0457.

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3 years ago

In a chemical equation, if 2 atoms of chlorine are used in the reactants to form calcium chloride, how many formula units of cal

elena-s [515]

Explanation:

The given reaction is as follows.

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The number of elements on reactant side are as follows.

Ca = 1
Cl = 2

The number of elements on product side are as follows.

Ca = 1
Cl = 2

Therefore, the equation is completely balanced.

Thus, we can conclude that only one formula units of calcium chloride must be part of the products.

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4 years ago

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