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allsm [11]
3 years ago
7

Which represents an endothermic reaction? wood burning in a fire splitting a gas molecule changing frost to water vapor TNT expl

oding
Chemistry
2 answers:
scoundrel [369]3 years ago
8 0

Answer:

changing frost into water vapors.

Explanation:

KIM [24]3 years ago
6 0

Answer:

(C)Changing frost to water vapor

Explanation:

melting, boiling, evaporation, and sublimation are endothermic processes

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Equal volumes of SO2(g) and O2(g) at STP contain the same number of
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Answer:

Equal volumes of SO2(g) and O2(g) at STP contain the same number of molecules

Explanation:

According to Avogadro Law,

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This law state that volume and number of moles of gas have direct relation.

When the amount of gas increases its volume will increase and when the amount of gas decreases its volume will decrease.

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expression will be,

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3 years ago
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Propanoic acid, ch3ch2cooh, has a pka =4.9. draw the structure of the conjugate base of propanoic acid and give the ph above whi
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Conjugate base of Propanoic acid (CH_{3}CH_{2}COOH is propanoate where -COOH group gets converted to -COO^{1-}. The structure of conjugate base of Propanoic acid is shown in the diagram.

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Explanation:

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