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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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Give me a hand,Solve this problem,Need everyone's help​
elixir [45]

Answer:

A. 8.8 g.

B. 5.3 g.

C. 449 g.

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A. Determination of the mass of CO2.

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Molar mass of CO2 = 12 + (2×16)

= 12 + 32

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Mass of CO2 =?

Mole = mass /Molar mass

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B. Determination of the mass of Na2CO3.

Mole of Na2CO3 = 0.05 mole

Molar mass of Na2CO3 = (2×23) + 12 + (3×16)

= 46 + 12 + 48

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Mass of Na2CO3 =?

Mole = mass /Molar mass

0.05 = mass of Na2CO3 /106

Cross multiply

Mass of Na2CO3 = 0.05 × 106

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C. Determination of the mass of Fe(OH)2.

Mole of Fe(OH)2 = 5 moles

Molar mass of Fe(OH)2 = 55.8 + 2(16 + 1)

= 55.8 + 2(17)

= 55.8 + 34

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Mass of Fe(OH)2 =?

Mole = mass /Molar mass

5 = mass of Fe(OH)2/89.8

Cross multiply

Mass of Fe(OH)2 = 5 × 89.9

Mass of Fe(OH)2 = 449 g.

8 0
3 years ago
valance refers to the total number of electrons that exist in the orbitals that occupy the outermost energy level of an atom
velikii [3]

valance refers to the total number of electrons that exist in the orbitals that occupy the outermost energy level of an atom. you pretty much got it!

8 0
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