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3 years ago

Why is distilled water added to the crucible after igniting the magnesium metal?

2 answers:

7 0

The reason why distilled water is being added to the crucible after having It to be ignited with the magnesium ribbon is mainly because it is needed to decompose the magnesium nitride to produce a more better result in the experiment and prevent it from reacting more vulgar such as having it to explode.

Kamila [148]3 years ago

6 0

Answer:

To decompose the Mg3N and release ammonium gas

Explanation:

Distilled water is the pure state of water, without mixing with other substances and microorganisms. It is obtained through the distillation process. Even though it is clean water, it is not suitable for consumption, however it can have several other applications, such as being added to the crucible after ignition of the magnesium metal, because it allows the decomposition of Mg3N and release of ammonium gas, avoiding the emergence of explosions.

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A car moves at a speed of 50 kilometers/hour. Its kinetic energy is 400 joules. If the same car moves at a speed of 100 kilomete

lys-0071 [83]

ke prop to v^2

ke1/v1^2=ke2/v2^2

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400x2x2

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3 years ago

. A bright violet line occurs at 435.8 nm in the emission spectrum of mercury vapor. What amount of energy, in joules, must be r

Tom [10]

Answer : The energy released by an electron in a mercury atom to produce a photon of this light must be, $4.56\times 10^{-19}J$

Explanation : Given,

Wavelength = $435.8nm=435.8\times 10^{-9}m$

conversion used : $1nm=10^{-9}m$

Formula used :

$E=h\times \nu$

As, $\nu=\frac{c}{\lambda}$

So, $E=h\times \frac{c}{\lambda}$

where,

$\nu$ = frequency

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

$\lambda$ = wavelength = $435.8\times 10^{-9}m$

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

Now put all the given values in the above formula, we get:

$E=(6.626\times 10^{-34}Js)\times \frac{(3\times 10^{8}m/s)}{(435.8\times 10^{-9}m)}$

$E=4.56\times 10^{-19}J$

Therefore, the energy released by an electron in a mercury atom to produce a photon of this light must be, $4.56\times 10^{-19}J$

3 0

3 years ago

Conociendo el volumen de la solución y la masa del soluto y su masa molar, ¿qué concentración es posible determinar

NISA [10]

Answer:

Conociendo el volumen de solución, masa de soluto y su masa molar, es posible determinar: B) Concentración molar

La molaridad es la relación entre el número de moles de soluto y los litros de solución. Más:

M = No moles de solución de soluto / volumen (L)

Y a su vez los moles de soluto se encuentran por:

No moles de soluto = masa soluto / masa molar soluto

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3 years ago

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s2008m [1.1K]

Answer:

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Explanation:

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3 years ago

Data can be arranged in visual displays called

mojhsa [17]

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hopefully this helps :)

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3 years ago