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max2010maxim [7]
2 years ago
13

What is the scientific name for button mushrooms?

Chemistry
2 answers:
Maksim231197 [3]2 years ago
8 0
It is Agaricus bisporus
kvasek [131]2 years ago
4 0
I think the answer is fungus
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For the homogeneous solution, consisting of kcl and h2o, indicate the type of forces that are involved.
zubka84 [21]
<span>The pairs of substances I would expect to form homogeneous solutions when combined will form a homogeneous because both are polar and form dispersion forces, dipole-dipole and hydrogen bonding between the water molecules and ion-dipole forces between the K+ and Cl- ions and the water molecules.</span>
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3 years ago
Study the solutions in the glasses. Put the solutions in order from concentrated to dilute.
Svetach [21]
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3 years ago
How many grams of NaF should be added to 500 mL of a 0.100 M solution of HF to make a buffer with a pH of 3.2
Korolek [52]

Answer:

2.25g of NaF are needed to prepare the buffer of pH = 3.2

Explanation:

The mixture of a weak acid (HF) with its conjugate base (NaF), produce a buffer. To find the pH of a buffer we must use H-H equation:

pH = pKa + log [A-] / [HA]

<em>Where pH is the pH of the buffer that you want = 3.2, pKa is the pKa of HF = 3.17, and [] could be taken as the moles of A-, the conjugate base (NaF) and the weak acid, HA, (HF). </em>

The moles of HF are:

500mL = 0.500L * (0.100mol/L) = 0.0500 moles HF

Replacing:

3.2 = 3.17 + log [A-] / [0.0500moles]

0.03 = log [A-] / [0.0500moles]

1.017152 = [A-] / [0.0500moles]

[A-] = 0.0500mol * 1.017152

[A-] = 0.0536 moles NaF

The mass could be obtained using the molar mass of NaF (41.99g/mol):

0.0536 moles NaF * (41.99g/mol) =

<h3>2.25g of NaF are needed to prepare the buffer of pH = 3.2</h3>
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2 years ago
True or False: Cohesion is the attraction between particles of the same<br> substance
RideAnS [48]

Answer: True

Explanation:

4 0
3 years ago
Suppose that the C=O group in a peptide bond can be regarded as isolated from the rest of the molecule. Given that the force con
Stella [2.4K]

Answer:

a) v = 1497.2 cm^-1

b) v = 1465 cm^-1

Explanation:

In the attached image is the procedure explained to reach the answer.

4 0
3 years ago
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