Why are buffers important to living things ?

1 answer:

4 0

Answer:Living systems are very sensitive to pH changes. Your blood, for example, has a pH of about 7.4. A rise or drop greater than 0.05 would require hospitalization (alkalosis and acidosis respectively). A rise or drop of 0.2 is fatal. If it weren't for the blood-buffering system, then swings this high and greater would be easy to accomplish and maintaining a living system would essentially be impossible.

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How many atoms are there in 7.2 mol neon?

rosijanka [135]

Answer:

A) 4.3 × 10²⁴ atoms

Explanation:

Step 1: Given data

Moles of neon: 7.2 moles

Step 2: Calculate the number of atoms present in 7.2 moles of neon

In order to convert moles to toms, we need a conversion factor. In this case, we will use Avogadro's number: there are 6.02 × 10²³ neon atoms in 1 mole of neon atoms.

7.2 mol × 6.02 × 10²³ atoms/mol = 4.3 × 10²⁴ atoms

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3 years ago

How many unpaired electrons are present in a ground-state atom from each of the following groups?

musickatia [10]

For 7A(17) :

Electronic configuration $ns^2 np^5$

So, there are 5 unpaired electrons present in group 7A(17).

<h3>What are Unpaired Electrons?</h3>

An unpaired electron is an electron that doesn't form part of an electron pair when it occupies an atom's orbital in chemistry.
Each of an atom's three atomic orbitals, designated by the quantum numbers n, l, and m, has the capacity to hold a pair of two electrons with opposing spins.
Unpaired electrons are extremely uncommon in chemistry because an object carrying an unpaired electron is typically quite reactive. This is because the production of electron pairs, whether in the form of a chemical bond or as a lone pair, is frequently energetically advantageous.
They play a crucial role in describing reaction pathways even though they normally only appear momentarily during a reaction on a thing called a radical in organic chemistry.

To learn more about unpaired electrons with the given link

brainly.com/question/14356000

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2 years ago

POV: You buy a composite cup at the store. Explain the reason for your decision.

Len [333]

Answer:

i bought it cuz i need a cup?

Explanation:

7 0

3 years ago