3 years ago

Why are reactions of ionic compounds very fast?

1 answer:

galina1969 [7]3 years ago

3 0

Ionic compounds in solution react faster than molecular compounds. This is because Ionic compounds break apart to form free ions. Therefore, there are no bonds to break so the reaction is fast

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dybincka [34]

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4 years ago

What is the energy of a photon that has a wavelength of 8.6x10^3nm?

aniked [119]

Answer:

The energy of the photon is $2.311\times 10^{-20}\ J$ .

Explanation:

Given:

The wavelength of the photon is given as:

$\lambda =8.6\times 10^3\ nm\\1\ nm = 10^{-9}\ m\\\therefore \lambda = 8.6\times 10^{3}\times 10^{-9}=8.6\times 10^{-6}\ m$

The energy of a photon in terms of its wavelength is given as:

$E_p=\frac{hc}{\lambda}\\Where,\ h\rightarrow \textrm{Planck's constant}=6.626\times 10^{-34}\ Js\\c\rightarrow \textrm{velocity of light}=3\times 10^8\ m/s$

Plug in all the given values and calculate energy of the photon, $E_p$ . This gives,

$E_p=\frac{6.626\times 10^{-34} \times 3\times 10^8}{8.6\times 10^{-6}}\\E_p=\frac{19.878\times 10^{-26}}{8.6\times 10^{-6}}\\E_p=2.311\times 10^{-20}\ J$