What are the most chemically active metals located on the periodic table

Chemistry

1 answer:

elena55 [62]3 years ago

3 0

The most chemically active metals are the alkali metals on the periodic table.

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What volume of each solution contains 0.14 mol of KCl? Express your answer using two significant figures.

trasher [3.6K]

Answer:

Solution given:

1 mole of KCl $\rightarrow$ 22.4l

1 mole of KCl $\rightarrow$ 74.55g

we have

0.14 mole of KCl $\rightarrow$ 74.55*0.14=10.347g

74.55g of KCl $\rightarrow$ 22.4l

10.347 g of KCl $\rightarrow$ 22.4/74.55*10.347=3.11litre

volume of each solution contains 0.14 mol of KCl contain 3.11litre.

5 0

3 years ago

Read 2 more answers

How does the kinetic-molecular theory explain the following properties of liquids:

Tcecarenko [31]

Answer:

"Kinetic energy of the gas is more as compared to that of the liquids. But when compare it to the solid, kinetic energy of liquid is more."

Explanation:

a) Relatively high density : This happens as a result of the tight or packed or can be say close arrangement of the particles.

b) Ability to diffuse : As we know that in gases the constant and the random motion of the particles of the liquid leads to diffusion. But it is very slow as compared to the gases and also porque liquid particles are close together.

c) Ability to evaporate:This happens as a result of the molecules of the liquid having different kinetic energies with particles having higher than that of the average energies that move faster.

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4 years ago

How are binary ionic compounds and binary molecular compounds similar and 2 ways they are different?

saw5 [17]

Answer:

The elements that combine to form binary molecular compounds are both nonmetal atoms. This contrasts with ionic compounds, which were formed from a metal ion and a nonmetal ion. ... Prefixes are used in the names of binary molecular compounds to identify the number of atoms of each element.

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3 years ago

Which of the following is not a conjugate acid-base pair? A) NH4+/NH3 B) H30-OH OC) H2SO3/HSO3 D) C2H302-/HC2H302

raketka [301]

Answer : The option (d) is not a conjugate acid-base pair.

Explanation :

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor.

(a) The equilibrium reaction will be,

$NH_4^++OH^-\rightleftharpoons NH_3+H_2O$