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Leni [432]
3 years ago
7

How to prepare magnesium carbonate starting with magnesium nitrate

Chemistry
1 answer:
STALIN [3.7K]3 years ago
8 0

Answer:

How to prepare Magnesium Carbonate:

Explanation:

Magnesium carbonate can be prepared in laboratory by reaction between any soluble magnesium salt and sodium bicarbonate: MgCl2(aq) + 2NaHCO3(aq) → MgCO3(s) + 2NaCl(aq) + H2O(l) + CO2(g)

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What is the energy of a photon that emits a light of frequency 6.42 x 1014 Hz?<br><br>​
svetlana [45]

Answer:

Option B. 4.25×10¯¹⁹ J

Explanation:

From the question given above, the following data were obtained:

Frequency (f) = 6.42×10¹⁴ Hz

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Energy and frequency are related by the following equation:

Energy (E) = Planck's constant (h) × frequency (f)

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With the above formula, we can obtain the energy of the photon as follow:

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E = hf

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E = 4.25×10¯¹⁹ J

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3 0
3 years ago
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Answer:

Neon (Ne)

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