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2 years ago

(Help me out )

Chemistry

1 answer:

Anit [1.1K]2 years ago

8 0

Answer:

3) A single specific wavelength

Explanation:

When an electron returns to ground state, it has to emit a single photon.

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Why would an atom emit particles or waves from its nucleus?

Neko [114]

Answer:

It’s A non of these

Explanation:

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2 years ago

Please dont answer if you dont know. It's the parts of a wave

Marina86 [1]

Answer:

1) wavelength
2) trough
3) amplitude
4) crest

Explanation:

Hope this helps!

5 0

2 years ago

. Using the pH scale below what would be the pH value of an Acid? *

earnstyle [38]

Answer : The pH value of an acid is below 7.

Explanation :

pH : It is defined as the negative logarithm of hydrogen ion or hydronium ion concentration.

Mathematically,

$pH=-\log [H^+]$

When the pH less than 7 then the solution is acidic and the concentration of hydrogen ion is greater than hydroxide ion.

When the pH more than 7 then the solution is basic and the concentration of hydrogen ion is less than hydroxide ion.

When the pH is equal to 7 then the solution is neutral and the concentration of hydrogen ion is equal to the hydroxide ion.

Hence, the pH value of an acid is below 7.

6 0

3 years ago

If the [H3O+] of a solution is 1x 10-8 mol/L the [OH-] is

Studentka2010 [4]

Answer:

(H30+)= 1x10^-6 M

Explanation:

Both pH and pOH have a relationship to belonging to the same aqueous solution: the expression of the Kwater (ionic product of the water Kw) is used:

1x 10-8 mol/L equals to1x10-8 M

(H3O+) x (OH-) = 1x10^-14

(H30+)x 1x 10^-8 =1x10^-14

(H30+)= 1x10^-14/1x 10^-8

(H30+)= 1x10^-6 M

6 0

3 years ago

How many molecules are contained in 0.800 mol o2?

Ksenya-84 [330]

Multiply .800 moles of O2 by Avagadro's number divided by 1 mole. This will get rid of the moles on the bottom and leave you with molecules. So technically .800 times 6.02x10^23.

6 0

2 years ago