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kifflom [539]
3 years ago
8

Plsss helppppppp will give you alot of pointss

Chemistry
1 answer:
yanalaym [24]3 years ago
5 0
The answer B The sound is being diffracted around the corners of the doorway
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WILL MARK BRAINLY! Which chemical element has the shortest name?
Aleonysh [2.5K]

Answer:

boron I guess

hope this heps

5 0
3 years ago
N2 (g) + __ H2 (g) --> _NH3 When the reaction above is completely
Advocard [28]

Answer:

3

Explanation:

left side has 2 N so right side must have a 2 which means 6 H on right side so to get 6 on left you have a coef. of 3 to make 6 H

7 0
2 years ago
To indicate the pH of a substance, one can use a dye that is both an acid and that appears as different colors in its protonated
PIT_PIT [208]

Answer:

<em>The pH of the solution is 7.8</em>

Explanation:

The concentration of the solution is 0.001M and  the dye could be in its protonated and deprotonated forms. If the concentration of the protonated form [HA] is 0.0002 M the concentration of the deprotonated form will be the subtraction between the concentration of the bye and the concentration of the protonated form:

[A-] = 0.001M - 0.0002M = 0.0008M

Also, the Henderson-Hasselbalch equation is

pH = pKa + Log \frac{[A^{-}]}{[HA]}

this equation shows the dependency between the pH of the solution, the pKa and the concentration of the protonated and deprotonated forms. Thus, replacing in the equation

pH = 7.2 + Log \frac{0.0008M}{0.0002M} = 7.8

3 0
3 years ago
Tomato juice has a pH of 4.20. Calculate the [H3O+] and [OH–] in tomato juice.
Free_Kalibri [48]
<span>[H3O+] = 10^(-pH) = 10^(-4.20) = 6.3 x 10^-5 M

pOH = 14 - pH = 14 - 4.20 = 9.80

[OH-] = 10^(-pOH) = 10^(-9.80) = 1.6 x 10^-10 M
</span>
8 0
3 years ago
How many particles are in 697.008 grams of Potassium Sulfate?
g100num [7]

Answer:

174.2592

Explanation:

Trust me.

8 0
3 years ago
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