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2 years ago

(a) Is a weak Brønsted-Lowry base necessarily a weak Lewis base? Explain with an example.

Chemistry

1 answer:

anyanavicka [17]2 years ago

3 0

Yes, all Bronsted-Lowry bases are Lewis bases, however no longer all Lewis bases are Bronsted-Lowry bases.

<h3>What is a susceptible Brønsted-Lowry bases?</h3>

A susceptible Brønsted-Lowry base indicates very little tendency to acquire a proton.

Weak Brønsted-Lowry bases consist of H2O, Cl- and NO3-. For example, the chloride ion is a vulnerable Brønsted-Lowry base:

<h3>What is the distinction between a Brønsted-Lowry base and a Lewis base?</h3>

Whereas the Brønsted-Lowry and the Arrhenius classifications are primarily based on switch of protons, Lewis acidity and basicity are primarily based on the sharing of an electron pair. Lewis acids can be given an electron pair, whilst Lewis bases can donate an electron pair.

Learn more about bases here:

<h3>brainly.com/question/1810086</h3><h3 /><h3>#SPJ4</h3>

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which of the following best helps explain why an increase in temperature increases the rate of a chemical reaction?

NeTakaya

The given question is incomplete. The complete question is as follows.

Which of the following best helps explain why an increase in temperature increases the rate of a chemical reaction?

(a) at higher temperatures, high-energy collisions happen less frequently.

(b) at low temperatures, low-energy collisions happen more frequently.

(c) at higher temperatures, less-energy collisions happen less frequently.

(d) at higher temperatures, high-energy collisions happen more frequently

Explanation:

When we increase the temperature of a chemical reaction then molecules of the reactant species tend to gain kinetic energy. As a result, they come into motion which leads to more number of collisions within the molecules.

Therefore, chemical reaction will take less amount of time in order to reach its end point. This means that there will occur an increase in rate of reaction.

Thus, we can conclude that the statement at higher temperatures, high-energy collisions happen more frequently, best explains why an increase in temperature increases the rate of a chemical reaction.

6 0

3 years ago

Which 3 elements had complete out shells? (you will probably need to use the periodic table)

wlad13 [49]

The inert gases like neon,argon ,krypton have complete shells

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3 years ago

HELP ME PLEASE I NEED HELP SO BADLY

crimeas [40]

State the given:

Moles of Sulfur = 5 moles

Molar mass of Sulfur = 32.06g/mol

Look through the formulas:

Moles = Mass/Molar Mass

Rearrange the equation:

Mass = Moles x Molar mass

Plug in your given:

5 moles Sulfur x <u>32.06g</u>

1 mol

<u>= 160.3g of Sulfur</u>

5 0

2 years ago

Helppp please I will give a brain thing plleaseee

frez [133]

Answer:

A. Crest
- The top of a wavelength is called a crest.

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3 years ago

Write the complete symbol, including mass number and atomic number, for each atom.

Reil [10]

Answer:

a) 58Ni

b) 43Ti

c) 34P

d) 18O

e) 58Ni

f) 43Ti

g)34P

h) 18O

i) 54Cr

Explanation:

<em>a) contains 28 protons and 30 neutrons:</em>

An atom with 28 protons and 30 neutrons has an atomic number of 28 and a mass number of (30+28) = 58.

The atom with atomic number 28 is Ni.

<em>b) contains 22 protons and 21 neutrons:</em>

An atom containing 22 protons and 21 neutrons has an atomic number of 22 and an atomic mass of (22+21) = 43

The atom with atomic number 22 is Titanium (Ti).

This is the 43Ti isotope of titanium

<em>c) contains 15 electrons and 19 neutrons</em>

An atom with 15 electrons would have the same amount of , 15 protons (considering it to be neutral) and has 19 neutrons.

Thus, the atomic number of the atom would be 15 and the mass number would be (15+19) = 34

The atom with atomic number 15 is phosphorus (P).

This is the 34P isotope of phosphorus

<em>d) an oxygen atom with 10 neutrons:</em>

Oxygen has an atomic number of 8, thus there are 8 protons in an atom of oxygen.

The mass number of the oxygen atom with 10 neutrons would be (8+10) = 18

This is 18O - isotope.

<em>e) contains 28 protons and 30 neutrons:</em>

An atom with 28 protons and 30 neutrons has an atomic number of 28 and a mass number of (30+28) = 58.

The atom with atomic number 28 is Ni.

<em>f) contains 22 protons and 21 neutrons:</em>

An atom containing 22 protons and 21 neutrons has an atomic number of 22 and an atomic mass of (22+21) = 43

The atom with atomic number 22 is Titanium (Ti).

This is the 43Ti isotope of titanium

<em>g) contains 15 electrons and 19 neutrons:</em>

An atom with 15 electrons would have the same amount of , 15 protons (considering it to be neutral) and has 19 neutrons.

Thus, the atomic number of the atom would be 15 and the mass number would be (15+19) = 34

The atom with atomic number 15 is phosphorus (P).

This is the 34P isotope of phosphorus

<em>h) an oxygen atom with 10 neutrons:</em>

Oxygen has an atomic number of 8, thus there are 8 protons in an atom of oxygen.

The mass number of the oxygen atom with 10 neutrons would be (8+10) = 18

This is 18O - isotope.

<em>i) The atomic number of Cr is 24 </em>

The mass number is given to be 54.

This is the 54Cr isotope and has 24 protons and 30 neutrons

8 0

4 years ago