Explain intermolecular forces cause water molecules to stick to a material like a glass pitcher

Chemistry

1 answer:

natulia [17]2 years ago

6 0

Answer:

Cohesive forces cause the water molecules to stick together with a lot of elasticity, allowing the water to function very much like a rubber into a material like a glass pitcher.

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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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2 years ago

All the atoms in Neon do not have to have 10 protons. True, or false?

Levart [38]

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true

Explanation:

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3 years ago

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When are the products of an equilibrium reaction favored? When the reaction is endothermic. When the equilibrium constant is lar

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Product are favored at ...

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A decrease in temperature favors the forward reaction (more product formed)
as heat is considered as a product

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decreasing concentration of product will cause a disturbance in equilibrium position....and reaction will restore its equilibrium by shifting to the right

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The Ideal gas law

Explanation:

From the given question, we have:

V $\alpha$ $\frac{nT}{P}$