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Stolb23 [73]
3 years ago
12

Why does silver gate tarnish on exposed to air

Chemistry
2 answers:
Lelu [443]3 years ago
7 0

Answer:

when silver articles exposed to air silver racts with Sulphur present in the atmosphere and form a black layer of silver sulphide on the surface. copper articles get tarnished by reacting with air and water. due to this, a layer is formed over copper vessels.

stich3 [128]3 years ago
6 0

Explanation: When silver is exposed to sulfur-containing gases in the air, it discolours and then darkens as it reacts with the gas to form a surface layer of tarnish If a silver object is to be kept from tarnishing, it must be protected from sulfur-containing gases.

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How many moles of helium are 8.84×10^24 atoms of He?
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14.77 mol.

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<u><em>Using cross multiplication:</em></u>

1.0 mole of He contains → 6.022 x 10²³ atoms.

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Answer:

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Explanation:

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2 L of CO reacted to produce 2 L of CO₂.

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