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love history [14]
3 years ago
13

Ethanol had a boiling point of 78.4°C. Propane has a boiling point of -42°C. Suggest why.​

Chemistry
1 answer:
Gwar [14]3 years ago
7 0

Answer:

Chemical compounds all have different melting points.

Explanation:

chemical compounds all have different freezing and boiling points. Different chemical compounds means they will have different chemical structures.

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Explanation:

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An alloy of bronze is manufactured by melting 51.2 g of copper with 6.84 g of tin. What is the percent copper in the bronze?
Harlamova29_29 [7]

Answer:

Percentage of copper = 88%

Explanation:

Given data:

Mass of copper = 51.2 g

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Percentage of copper = ?

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Percentage of copper = mass of copper / total mass × 100

Now we will determine the total mass:

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Total mass = 51.2 g + 6.84 g

Total mass = 58.04 g

Now we will calculate the percentage of copper.

Percentage of copper = 51.2 g / 58.04 g × 100

Percentage of copper = 0.88 × 100

Percentage of copper = 88%

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