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ladessa [460]
3 years ago
15

What is the difference between 24-karat gold and gold used for normal jewelry?

Chemistry
2 answers:
deff fn [24]3 years ago
8 0

Answer: 24k gold has a higher purity making it softer and malleable but its used in jewelry as 14k and 18k gold of lesser purity

Explanation:

erastovalidia [21]3 years ago
4 0

Explanation:

A 24 Karat gold is 100 per cent pure gold and does not have any other metal mixed. ... The 24 karat gold is more expensive than 22 or 18 Karat gold. It is soft and pliable and that's why not used in making regular forms of jewellery

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How many grams of oxygen gas will be produced when 2.50 moles of potassium chlorate is decomposed?
yawa3891 [41]

Answer:

m_{O_2}=120gO_2

Explanation:

Hello!

In this case, since the decomposition of potassium chlorate is:

2KClO_3\rightarrow 2KCl+3O_2

We can see a 2:3 mole ratio between potassium chlorate and oxygen (molar mass 32.0 g/mol), thus, via stoichiometry, we compute the mass of oxygen that are produced by the decomposition of 2.50 moles of this reactant:

m_{O_2}=2.50molKClO_3*\frac{3molO_2}{2molKClO_3} *\frac{32.0gO_2}{1molO_2}\\\\m_{O_2}=120gO_2

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3 years ago
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3 years ago
Elements can be described by various properties, and identified by their boiling and melting points. For example, gold melts at
Leni [432]

Answer:

Elements can be described by various properties, and identified by their boiling and melting points. For example, gold melts at

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A. No; chemical properties stay the same regardless of mass.

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D. No; qualitative properties like boiling point stay the same regardless of mass.

Explanation:

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