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kirill115 [55]
2 years ago
13

All amino acids that are found in proteins, except for proline, contain a(n); Group of answer choices amino group carbonyl group

ester group carboxyl group thiol group
Chemistry
1 answer:
Jobisdone [24]2 years ago
7 0

Answer:

amino group

Explanation:

There are twenty (20) amino acids in nature. Generally, each amino acid is structurally made up of a central carbon atom called alpha carbon attached to a hydrogen, carboxylic acid group (-COOH) and an amine group (-NH2). However, one particular amino acid called PROLINE posseses an exception to this.

Proline, which is the only cyclic amino acid, is also the only amino acid that forms a secondary amine group i.e. loss of hydrogen atoms in its amine group when in a protein structure. This means that when in a protein, PROLINE does not have an AMINE GROUP.

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Find the mass in grams of 1.40x10^23 molecules of n2
mina [271]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We calculate as follows:

</span>1.40x10^23 molecules of N2 ( 1 mol / 6.022 x 10^23 molecules ) ( 28.02 g / mol ) = 6.51 g N2
7 0
1 year ago
Question 17 In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas t
mars1129 [50]

Answer:

Explanation:

N₂       + 3H₂     =     2 NH₃

1 vol                         2 vol

786 liters               1572 liters

786 liters of dinitrogen will result in the production of 1572 liters of ammonia

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temperature T₁ = 222 + 273 = 495 K

pressure = .35 atm

We shall find this volume at NTP

volume V₂ = ?

pressure = 1 atm

temperature T₂ = 273

\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}

\frac{.35\times 1572}{495} =\frac{1\times V_2}{ 273 }

V_2 =303.44 liter .

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At NTP mass of 22.4 liter of ammonia will have mass of 17 gm

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=.23 kg / sec .

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5 0
2 years ago
Show that the Newton has the units of mass times acceleration
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F = ma = (kg)(m/s2) = kg ´ m/s2 N

hope this helps :D

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stellarik [79]
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6 0
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koban [17]

Answer:

the correct answer is (sp3d2) (d)

Explanation:

5 0
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