2 years ago

The variable part of an amino acid is the __________.

1 answer:

6 0

answer: the variable part of an amino acid is the: SIDE CHAIN

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OLEGan [10]

pH=4.625

The classification of this sample of saliva : acid

<h3>Further explanation</h3>

The water equilibrium constant (Kw) is the product of concentration

the ions:

Kw = [H₃O⁺] [OH⁻]

Kw value at 25° C = 10⁻¹⁴

It is known [OH-] = 4.22 x 10⁻¹⁰ M

then the concentration of H₃O⁺:

$\tt 10^{-14}=4.22\times 10^{-10}\times [H_3O^+]\\\\(H_3O^+]=\dfrac{10^{-14}}{4.22\times 10^{-10}}=2.37\times 10^{-5}$

pH=-log[H₃O⁺] $\tt pH=5-log~2.37=4.625$

Saliva⇒acid(pH<7)

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3 years ago

mixas84 [53]

Q1. Chemical, Physical, Physical, Physical
(l am not 100% sure about the 4th answer)

Q2. All of the above

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3 years ago

True [87]

I woud say B because jupiter has more of a gravitational pull

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3 years ago

levacccp [35]

<span>I think it is the barometer and aneroid barometer</span>

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3 years ago

TEA [102]

The answer would be:
D = M/V

D=Density
M= mass
V= volume

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3 years ago