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Temka [501]
3 years ago
8

What is the frequency of electromagnetic radiation with a wavelength of 6.34 x 10^8 m?

Chemistry
1 answer:
Svetllana [295]3 years ago
8 0
<h2>Answer: 4.72 × 10⁷  s⁻¹ or Hz</h2><h3>  Explanation: </h3>

frequency = speed of light ÷ wavelength

frequency = (2.99 × 10⁸  m/s)  ÷  (6.34 × 10⁸  m)

                  =  4.72 × 10⁷  s⁻¹ or Hz

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Which statement is true about crystal lattice energy
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Hey there!:

1) The additional stability that accompanies the formation of the network<span>Crystalline is measured as network enthalpy. 
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3) </span>The enthalpy of the network depends directly on the size of the loads and conversely in the distance between the ions .


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3 years ago
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What is the name of the product isotope formed when Thorium-234 decays by beta decay?
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protactinium-234,

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This is what happens when thorium-234 releases a W- boson, which then decays to an electron and an electron antineutrino.

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What is the difference between metallic and non metallic oxides?​
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Metal oxides are compounds composed of metal ions and oxide ions. Nonmetal oxides are compounds composed of nonmetal atoms and oxygen atoms. The main difference between metal oxides and non metal oxides is that metal oxides are basic compounds whereas nonmetal oxides are acidic compounds.

Explanation:

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Which of the following views of weather is an example of systems thinking
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A 100.0 mL sample of 0.300 M NaOH is mixed with a 100.0 mL sample of 0.300 M HNO3 in a coffee cup calorimeter. If both solutions
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Answer:

Qm  = -55.8Kj/mole

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=> 0.03mole NaOH(aq) + 0.03mole HNO₃(aq)

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