All categories

3 years ago

What are emission spectra?

Chemistry

2 answers:

asambeis [7]3 years ago

7 0

<h2>Answer:</h2>

<u>A. The photons emitted when an electron drops down an energy level. </u>

<h2>Explanation:</h2>

When a source emits electromagnetic radiation then the spectrum is called as emission spectrum. It is emitted during the process when an atom makes its transition of energy levels to ground state.

Ground state is the state where atom possesses the lowest energy. When an atom or molecule comes down from higher energy level to lower energy level, it emits the spectrum which is called as emission spectrum.

Solnce55 [7]3 years ago

3 0

Answer:

a spectrum of the electromagnetic radiation emitted by a source.

Explanation:

You might be interested in

Light travels three-fourths as fast through water as it does through a vacuum.

Talja [164]

1.33 is the answer thank me later

4 0

3 years ago

Read 2 more answers

The process of an atom releasing energy when it moves to a lower energy state is called

Inga [223]

The process of an atom releasing energy when it moves to a lower energy state is called emission.

4 0

3 years ago

from the following chemical reaction , calculate the moles of mg if 3.5 mol of hcl in reactant mg + 2hcl --> mgcl2 + h2

sveticcg [70]

1.75 moles or 1.8 moles if you’re rounding in terms of sig figs

6 0

2 years ago

The compound sodium carbonate is a strong electrolyte. Write the reaction when solid sodium carbonate is put into water:

Ludmilka [50]

The compound sodium carbonate is a strong electrolyte because it completely dissociates when placed in water into its component ions. The equation of the reaction can be expressed as:

$Na_2CO_3_{(s)} ---> 2 Na^+_{(aq)} + CO_3^{(2+)}_{(aq)}$

The dissociation leads to the formation of sodium and carbonate ions with the latter held together by its internal covalent bond.

This is unlike weak electrolytes that do not dissociate completely in water or aqueous solutions. Only a small fraction of the solute exists as ions in the solution.

More on strong and weak electrolytes can be found here: brainly.com/question/3410548

7 0

3 years ago

How many mg of salt are in a 2.78 kg bag of salt?

igomit [66]

Answer:

2,780,000mg

Explanation:

Using the Metric Staircase photo provided, you can calculate how many mg there are in 2.78 kg by simply moving the decimal point six places to the right, since the "Kilo" step takes six places to move to the "Milli" step.

2.78 kg

---------------

2 7 8 0 0 0 0 .

we can see that the decimal point is moved to the right six places.

Answer:

2,780,000mg

7 0

3 years ago