3 years ago

When describing electromagnetic radiation there is a (n)

Chemistry

1 answer:

maria [59]3 years ago

6 0

Yes there is but what are you asking

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An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?

Tju [1.3M]

Answer:

KBr

Explanation:

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3 years ago

When elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that

guapka [62]

True i really don’t feel like giving an explanation but trust me it’s trye

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2 years ago

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If oxygen is removed from a sample of air as iron rust, what happens to the particle pressure of oxygen in the air?

klasskru [66]

Answer : It increases

Rusting is where oxygen binds to iron and forms iron oxide.

So once iron rusts, there is oxygen, just not in air; it's in the iron oxide.

All reactions are reversible, albeit at different rates (the "irreversible" ones are still reversible, but much slower given that they take so much collision luck and energy.

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2 years ago

The pKa of the α‑carboxyl group of serine is 2.21 , and the pKa of its α‑amino group is 9.15 . Calculate the average net charge

sleet_krkn [62]

Answer:

Net charge in serine at pH equal to 8.30 is "0"

Explanation:

At pH > $pK_{a}$ , carboxyl group exists as $-CO_{2}^{-}$ (charged)

At pH < $pK_{a}$ , carboxyl group exists as -COOH (neutral)
At pH > $pK_{a}$ , amino group exists as $-NH_{2}$ (neutral)
At pH < $pK_{a}$ , amino group exists as $-NH_{3}^{+}$ (charged)
So, at pH = 8.30, both carboxyl and amino group exists in charged state.
Net charge in serine at pH equal to 8.30 is "0".
Structure of serine at pH equal to 8.30 has been shown below.

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3 years ago

The reaction between alcohols and carboxylic acids is called

aleksandrvk [35]

Explanation:

When a carboxylic acid is treated with an alcohol and an acid catalyst, an ester is formed (along with water). This reaction is called the Fischer esterification.

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2 years ago