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3 years ago

What is a neutrons and a proton?

Chemistry

2 answers:

Y_Kistochka [10]3 years ago

7 0

Answer:

Protons are a type of subatomic particle with a positive charge

Neutrons are a type of subatomic particle with no charge (they're neutral).

Hatshy [7]3 years ago

4 0

Protons are a subatomic particle with a positive charge. Neutrons are a subatomic particle with no charge (they're neutral).

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Who discovered that geologic changes are cyclical?

slega [8]

I believe it was James Hutton

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3 years ago

Why a common measuring system is important

Gekata [30.6K]

So scientist around the world can share there info without having to convert and doing extra work.

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3 years ago

What is the energy in joules of one photon of microwaveradiation with a wavelength 0.122m?

pentagon [3]

Answer: The energy of photon is $162.93\times 10^{-26}J$

Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

$E=\frac{hc}{\lambda}$

where,

E = energy of the light = ?

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength of photon = 0.122 m

Putting values in above equation, we get:

$E=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{0.122m}\\\\E=162.93\times 10^{-26}J$

Hence, the energy of photon is $162.93\times 10^{-26}J$

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3 years ago

The reaction between sodium and chlorine that forms table salt is shown

Olegator [25]

Answer: 2 Na (s) + Cl(g) -> 2 NaCl (s)

Explanation:

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3 years ago

(ii) Electrons are supplied to the external circuit. How and where is this done? [2]

pentagon [3]

Answer:

The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit. The external battery supplies the electrons. They enter through the cathode and come out through the anode

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3 years ago