Write the complete equation: Nobelium-258 spontaneously fissions to silver-120 and cesium-135 and emits 3 neutrons

Chemistry

1 answer:

Mashcka [7]4 years ago

5 0

Answer:

The answer to your question is below

Explanation:

$No^{258} ---------- Ag^{120} + Cs^{135} + 3 neutrons$

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0.023 M solution of perchloric acid

kogti [31]

The original question is to find the pH and the pOH of 0.023 M of perchloric acid.

Answer:
pH = 1.638
pOH = 12.362

Explanation:
1- getting the pH:
pH can be calculated using the following rule:
pH = -log[H+]
Since the given solution is an acid, this means that [H+] is the same as the concentration of the solution.
This means that:
[H+] = 0.023
Substitute in the above equation to get the pH as follows:
pH = -log[0.023]
pH = 1.638

2- getting the pOH:
We know that:
pH + pOH = 14
We have calculated that pH = 1.638.
Substitute in the above equation to get the pOH as follows:
pOH + 1.638 = 14
pOH = 14 - 1.638
pOH = 12.362

Hope this helps :)

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4 years ago

Be able to identify the correct elements using clues such as numbers of protons,locations (family/period), number of neutrons, n

Brilliant_brown [7]

an element's name, chemical symbol, atomic number, atomic mass.

IDK what you are even asking for

6 0

4 years ago

I need help answer with right answer

larisa86 [58]

Answer:

I think it would be D