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Dafna1 [17]
3 years ago
13

A gaseous substance turns into a solid. Which best describes this change? A substance that has a specific shape changes to a sub

stance that has no specific shape. A substance that has no specific volume changes to a substance that has a specific volume. A substance that completely fills its container changes to a substance that has a specific volume but takes the shape of its container. A substance that has a specific volume changes to a substance that has a much smaller specific volume.
Chemistry
2 answers:
Snezhnost [94]3 years ago
8 0

A substance that has no specific volume changes to a substance that has a specific volume.

Pavel [41]3 years ago
6 0

A substance that has no specific volume (gas has no definite volume or shape) changes to a substance that has a specific volume (solid has definite volume and definite shape).

And all the other options doesn't describe this change of gaseous substance turns into solid.

<u>The right option is :</u>

A substance that has no specific volume changes to a substance that has a specific volume.

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Answer:

Six C atoms (C₆); five H atoms (H₅); one N atom (N); no O atoms

Explanation:

The rule of 13 states that the formula of a compound is a multiple n of 13 (the molar mass of CH) plus a remainder r.

MF = CₙHₙ₊ᵣ

Y has a molecular mass of 91 u

91/13 =7r0

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C₇H₇ + N - CH₂ = C₆H₅N

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6C = 6 × 12.000 = 72.000 u

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This is excellent agreement with the observed mass of 91.0425 u.

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There are five H atoms (H₅)

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