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4 years ago

28. Explain the difference between the processes of melting and freezing?

Chemistry

2 answers:

Zielflug [23.3K]4 years ago

8 0

Answer:

Explanation: The difference between the processes of melting and freezing are that freezing is the process of a substance turning from liquid to a solid whereas melting is the process of a substance turning from a solid to a liquid. In freezing coldness need to be add as heat is being removed, but in melting heat needs to be added. For example when you freeze water you have to put it in the freezer which is a cold place and it turns to a solid. When you melt chocolate you add heat to it making it turn to a liquid.

natali 33 [55]4 years ago

4 0

Freezing something makes it solid and melting something makes it a liquid

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Answer:

Explanation:

Sodium Na, Carbon C, hydrogen H2, Oxygen O

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SVETLANKA909090 [29]

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Answer:

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Explanation:

Step 1: Data given

Mass of the sample = 5.54 grams

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CH3COOH + NaOH → CH3COONa + H2O

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Moles NaOH = volume * molarity

Moles NaOH = 0.03010 L * 0.100M

Moles NaOH = 0.00301 moles NaOH

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For 1 mol NaOH we need 1 mol CH3COOH

For 0.00301 moles NaOH we nee 0.00301 moles CH3COOH

Step 5: Calculate mass CH3COOH

Mass CH3COOH = moles CH3COOH * molar mass CH3COOH

Mass CH3COOH = 0.00301 moles * 60.05 g/mol

Mass CH3COOH = 0.1808 grams

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