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Lisa [10]
3 years ago
7

If an atom has 17 protons, 15 neutrons, and 20 electrons, what is the atom's electrical charge?

Chemistry
1 answer:
olga55 [171]3 years ago
3 0

The overall charge on this ion is -3. Neutrons don’t carry a charge, while protons and electrons carry a net +1 and -1 charge, respectively. In this case, the electrons outweigh the protons by 3, making the overall charge -3.

Hope this helps!

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Read 2 more answers
Calculate the ph of 0.200 mol dm–3 ethanoic acid (pka = 4.76).
Lady bird [3.3K]
See attachment file below.
Use formulas relating pka, ka, and ph


Hope it helped!

4 0
2 years ago
A 44.0 ml volume of 0.25 m hbr is titrated with 0.50 m koh. calculate the ph after addition of 22.0 ml of koh at 25 ∘c.
Helga [31]
The reaction between KOH and HBr is as follows ;
KOH + HBr ---> H₂O + KBr
Stoichiometry of base to acid is 1:1 molar ratio
Both are strong acid and strong base therefore complete ionization takes place
The number of KOH moles added - 0.50 M / 1000 mL/L x 22 mL = 0.011 mol
the number of HBr moles - 0.25 M /1000 mL/L x 44 mL = 0.011 mol
the number of H⁺ ions and OH⁻ ions are equal therefore the whole amount of acid has been completely neutralised by base.
No remaining acid nor base, therefore solution is neutral.
pH = 7 
thats the pH value for a neutral solution

4 0
3 years ago
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