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Anna35 [415]
3 years ago
7

A 1.45 L buffer solution consists of 0.111 M butanoic acid and 0.281 M sodium butanoate. Calculate the pH of the solution follow

ing the addition of 0.078 moles of NaOH. Assumr that any contribution of the NaOH to the volume of the solution negligble. The ka of butanoic acid is 1.52x10^-5.
Ph= __________-
Chemistry
1 answer:
umka21 [38]3 years ago
5 0

Answer: -5

Explanation:

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Structure of tetrazine
Vika [28.1K]

Answer:

Tetrazine is a compound that consists of a six-membered aromatic ring containing four nitrogen atoms with the molecular formula C2H2N4.

(See the image)

Hope it helps!

3 0
3 years ago
How does an atom become a positively charged ion
sladkih [1.3K]
When, it donates electons.

as for example take
NaCl ( sodium chloride)

it's an ionic compund,
that means it is formed by donating or gaining electrons

Na is writen first than, it must be electropositive i.e it has donated electons which made it positive and the clorine gains electron so it's electronegative.

Na is positive because
as we know it's atomic number is 11 that means it has 11 protons and 11 electrons
now, when it donate electon it has, greater number of protons whose change is +ve so the atom becomes overall positively charged ion or cation.

and something same happens in clorine and because it gains one electron and the number of electrons increase in it by 1 whise charge is -ve so, the atom becomes negatively charged ion or anion which has a -1 charge.
3 0
3 years ago
Which object in the solar system is shown in the image? (15 points)
valentinak56 [21]

Answer:

its an asteroid

and it seems to be same as picture and what I knew

have a great time

6 0
3 years ago
if an element has an atomic mass of 127 and an atomic number of 53, how many neutrons does it have? 74 127 53 75
nadya68 [22]
74 is the answer u find it by subtracting the protons(atomic number) from atomic mas, so basically... 127-53 =74 neutrons
7 0
3 years ago
Suppose you were preparing 1.0 L of a bleaching solution in a volumetric flask, and it calls for 0.21 mol of NaOCl. If all you h
yulyashka [42]

Answer:

0.256 L  

Explanation:

We should use the following formula:

concentration (1) × volume (1) =  concentration (2) × volume (2)

concentration (1) = 0.82 M NaOCl

volume (1) = ?

concentration (2) = 0.21 M NaOCl

volume (2) = 1 L

volume (1) = [concentration (2) × volume (2)] / concentration (1)

volume (1) = [0.21 / 1] / 0.82 = 0.256 L

3 0
3 years ago
Read 2 more answers
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