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aniked [119]
3 years ago
9

Sterling silver is a mixture of the metals silver and copper.It is used to make jewellery.sometimes sterling silver causes green

staining on skin.Which metal do you think is responsible for this?Explain why.
Chemistry
1 answer:
slavikrds [6]3 years ago
8 0

The composition of 925 Sterling Silver lends itself to the occasional green discoloration because of the presence of copper

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What might be a scientific question
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Answer:

Example of a scientific question:

Does the angle of a ramp change the distance a toy car will travel?

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1 year ago
Why is 15 m acetic acid an appropriate solvent in which to perform rate studies of electrophilic bromintations?.
Alekssandra [29.7K]

Acetic acid activates the bromine and makes it a better electrophile.

<h3>What is bromination?</h3>

When a substance undergoes bromination, bromine is added to the compound as a result of the chemical reaction. After bromination, the result will have different properties from the initial reactant.

<h3>Why is 15M acetic acid used as a solvent for bromination?</h3>

DCM (dichloromethane) requires more time. Acetic acid has protons that can give one of the Br (bromine) a positive charge and activate it. There is a brief loss of aromaticity that calls for high energy activation.

Refer to the attached image for bromination reaction.

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brainly.com/question/26428023

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Download docx
8 0
10 months ago
Read 2 more answers
HELP PLEASE THIS IS CONFUSING
Rasek [7]

Number of moles = 8.3 x 10⁻¹³

<h3>Further explanation </h3>

The mole is the number of particles(molecules, atoms, ions) contained in a substance

1 mol = 6.02.10²³  particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's =  6.02.10²³

5 x 10¹¹ atoms of Silver :

\tt mol=\dfrac{5\times 10^{11}}{6.02\times 10^{23}}=8.3\times 10^{-13}

5 0
3 years ago
The conversion of mass into huge amounts of energy is the basis of __________.
pshichka [43]

Answer:

D

Explanation:

Nuclear binding energy curve. During the nuclear splitting or nuclear fusion, some of the mass of the nucleus gets converted into huge amounts of energy and thus this massis removed from the total mass of the original particles, and the mass is missing in the resulting nucleus.

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3 years ago
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Nina [5.8K]

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This involves your heart, blood, veins, and arteries

4 0
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