3 years ago

How an atom of an element reacts chemically is based on its what?

Chemistry

1 answer:

iragen [17]3 years ago

8 0

How an atom reacts chemically depends on how willing it is to share electrons with others.

It’s electrons

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The molar absorptivity of a tyrosine residue at 280 nm is 2000 M-1cm-1, while for tryptophan it is 5500 M-1cm-1. A protein has b

adelina 88 [10]

Answer:

There are 4 tryptophans in the protein.

Explanation:

According to question, protein contains one tyrosine residue and say x number of tryptophans.

Concentration of protein solution = 1.0 micromolar = $1.0\times 10^{-6} Molar$

Molar absorptivity of a protein solution : $\epsilon$

$\epsilon = \epsilon _{tyro}+\epsilon _{tryp}$

$=1\times 2000 M^{-1}cm^{-1}+x\times 5500 M^{-1}cm^{-1}$

Length of the cuvette = l = 1.0 cm

Absorbance of protein solution at 280 nm = A = 0.024

$A=\epsilon \times l\times c$ ( Beer-Lambert's law)

$0.024=(1\times 2000 M^{-1}cm^{-1}+x\times 5500 M^{-1}cm^{-1})\times 1 cm\times 1.0\times 10^{-6} M$

Solving for x :

x = 4

There are 4 tryptophans in the protein.

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3 years ago

You have a balloon filled with hellum that has a volume of 4.91 cubic decimeters

juin [17]

Answer:

Explanation:

because the number of heliem is your aswer

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2 years ago

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4. A sign in a town gives the speed limit at 50.00 km/hr. What is this speed in cm/sec?

ivanzaharov [21]

sorry but if you are looking for an answer I don't know one. :(

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3 years ago

Help please I need it bad

natta225 [31]

= 9.1 × 10^6
(scientific notation)

= 9.1e6
(scientific e notation)

= 9.1 × 10^6
(engineering notation)
(million; prefix mega- (M))

= 9100000
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Explanation:

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