3 years ago

Which of the following best describes a single-replacement reaction?

Chemistry

1 answer:

miss Akunina [59]3 years ago

4 0

Answer:

One element takes the place of another in a compound

Explanation:

a p e x - just did the test

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Silver metal is expensive and should always be recycled. If your lab has 0.500 L of silver nitrate solution (2 .00 mol* L^ -1 )

Paladinen [302]

Mass of Copper : 63.5 g

<h3>Further explanation</h3>

Given

Reaction

Cu(s)+2AgNO₃ (aq) ⇒Cu(NO₃)₂ (aq)+2Ag(s)

Required

Mass of Copper

Solution

mol of Silver nitrate :

= M x V

= 2 mol/L x 0.5 L

= 1

From the equation, mol ratio of Cu : AgNO₃ = 1 : 2, so mol Cu = 1

Mass of Cu(Ar=63.5 g/mol) :

= mol x Ar

= 1 x 63.5

= 63.5 g

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3 years ago

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Answer:

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Explanation:

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3 years ago

What is the energy of a 4.66 x 1014 Hz wave?

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I attached the working and the answer to both questions below.

Please note that E = energy, ν = frequency, h = Plank's Constant

The energy of a 4.66 x 10¹⁴ Hz wave is 3.088 × 10⁻¹⁷ J

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3 years ago

The Brønsted-Lowry theory defines an acid as a(n)

Novosadov [1.4K]

Letra A. Doador de H+

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When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion?. . A. -1 . B. -2 . C

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Since it has lost 2 electrons, hence the protons would be more by 2.

Charge:

 C. +2

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3 years ago

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