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Troyanec [42]
3 years ago
7

Neutrons add only ____ to an atom.

Chemistry
2 answers:
Natali [406]3 years ago
8 0
Neutrons are neutral particles, so they don't change the charge of an atom. They do however, change the atomic mass, so the answer would be a. mass. 
blagie [28]3 years ago
3 0

the answer for the will be A.mass

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Propanoic acid fromula<br>​
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Answer:

C₃H₆O₂

Explanation:

Propionic acid is a colorless liquid with a sharp rancid odor. Produces irritating vapor. (USCG, 1999)

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3 years ago
What determines whether an object will scatter light or reflect light?
Masteriza [31]
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Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an el
Likurg_2 [28]

Answer: 281 hours

Explanation:-

1 electron carry charge=1.6\times 10^{-19}C

1 mole of electrons contain=6.023\times 10^{23} electrons

Thus  1 mole of electrons carry charge=\frac{1.6\times 10^{-19}}{1}\times 6.023\times 10^{23}=96500C

Cu^{2+}+2e^-\rightarrow Cu

96500\times 2=193000Coloumb of electricity deposits 1 mole or 63.5 g of copper

0.0635 kg of copper is deposited by 193000 Coloumb

11.5 kg of copper is deposited by=\frac{193000}{0.0635}\times 11.5=34952756 Coloumb

Q=I\times t

where Q= quantity of electricity in coloumbs  = 34952756 C

I = current in amperes = 34.5 A

t= time in seconds = ?

34952756 C=34.5A\times t

t=1013123sec=281hours

Thus it will take 281 hours to plate 11.5 kg of copper onto the cathode if the current passed through the cell is held constant at 34.5 A.

8 0
3 years ago
The number of electrons in a neutral atom of hydrogen (H) atom is
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3 years ago
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Answer:

Earlier, since the sun comes out first from east to west, and Nevada is east of California, it would be earlier.

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i belive the longitude would be 180 degrees

3 0
3 years ago
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