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sashaice [31]
3 years ago
10

Which of the following terms describes a piece of pure gold?

Chemistry
2 answers:
vladimir2022 [97]3 years ago
6 0

Answer:

The correct answer is the option: d. mixture.

Explanation:

Hello! Let's solve this!

Pure gold is a mixture, since it is mixed with some other metal to increase its characteristics.

Pure gold or fine gold is 24-karat gold.

A mixture is the union of one or more elements, but they are not chemically linked.

We conclude that the correct answer is the option: d. mixture.

SCORPION-xisa [38]3 years ago
4 0
Mixture would be the piece of pure gold. I don't know the explanation but the answer is mixture, I'm sure about that it is mixture, I read it somewhere.
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1. NaOH mass of a solution of 200g in which its percentage is 25%. What mass of sulfuric acid solution is needed to completely n
Ede4ka [16]

Answer:

m_{H2SO4 = 61.25 g

m_{Na2SO4} = 88.75 g

Explanation:

m_{NaOH} = \frac{200 . 25 }{100} = 50 g

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2NaOH + H2SO4 ⇒ Na2SO4 + 2H2O

   2        :     1           :      1         :    2

 1.25                                                       (moles)

⇒  n_{H2SO4} = 1.25 × 1 ÷ 2 = 0.625 (moles) ⇒ m_{H2SO4} = 0.625 × 98 = 61.25 g

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