What was the plum pudding atomic model

Chemistry

2 answers:

likoan [24]3 years ago

4 0

Ya it dose help stuipd

postnew [5]3 years ago

3 0

Thomson's atomic model is a theory about the atomic structure proposed in 1904 by Thomson, who discovered the electron in 1897, a few years before the discovery of the proton and the neutron.

Hope this helps :))

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Consider a 125 mL buffer solution at 25°C that contains 0.500 mol of hypochlorous acid (HOCl) and 0.500 mol of sodium hypochlori

Helga [31]

Answer:

pH = 6.82

Explanation:

To solve this problem we can use the Henderson-Hasselbach equation:

pH = pKa + log $\frac{[NaOCl]}{[HOCl]}$

We're given all the required data to calculate the original pH of the buffer before 0.341 mol of HCl are added:

pKa = -log(Ka) = -log(2.9x10⁻⁸) = 7.54

[HOCl] = [NaOCl] = 0.500 mol / 0.125 L = 4 M

pH = 7.54 + log $\frac{4}{4}$

pH = 7.54

By adding HCl, we simultaneously increase the number of HOCl and decrease NaOCl:

pH = 7.54 + log $\frac{[NaOCl-HCl]}{[HOCl+HCl]}$

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3 years ago

Calculate the energy of a photon of light with a frequency of 5.109 × 1016 Hz.

lyudmila [28]

Answer:

The energy of the photon is 1.718×10−26J.

Explanation:

The energy of the photon is

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