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yulyashka [42]
3 years ago
13

The bright-line spectrum of sodium is produced when energy is

Chemistry
2 answers:
Levart [38]3 years ago
6 0
<h2>Answer : Option C) Released as electrons move from higher to lower electron shells.</h2><h3>Explanation :</h3>

The bright-line spectrum of sodium is produced when energy the excited electron from the higher energy level comes back to the lower energy level by releasing energy in the form of light, this creates a bright-light spectrum of sodium.

Electrons in the atoms absorb the incident light of certain energies which results in a electron transition from the ground state or it can be also from a lower-energy excited state to a higher-energy level excited state this gives an absorption spectrum, which has dark lines in the same position whereas the bright lines in the emission spectrum of  that particular element.

bearhunter [10]3 years ago
5 0
<span>A bright-line spectrum of sodium is produced when energy is absorbed as electrons move from higher to lower electron shells. Electrical energy tends to excite electrons causing them to have this reaction. When an electron is excited with electricity the electrons tend to move up a shell. Moving up a shell makes the electrons unstable. Eventually, these unstable electrons will come back down a shell and what will be left are emissions of photons. These photons form different wavelengths resulting to a bright-line spectrum.</span>
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astra-53 [7]
#1
The correct answer is A.)

Because the animal has sperm that means that the offspring will be different. This is because at conception, the two parents sex cells combine their DNA to make a new creature.

#2
The correct answer is B.)

Genetic variation produces different offspring, and some are more adapted to others. The ones that survive pass on their genes. This is know as "Survival of the Fittest". Asexually organisms are exactly like their parents, so if they have any type of genetic defaults, then their offspring will get them too. 

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3 0
3 years ago
The molecule CH20 contains two single bonds and one double bond.<br> True<br> False
dem82 [27]

Answer:

True

Explanation:

The molecule CH20 contains two single bonds and one double bond.

6 0
3 years ago
Complete the charge balance equation for an aqueous solution of h2co3 that ionizes to hco−3 and co2−3.
Zielflug [23.3K]

The charge balance equation for an aqueous solution of H₂CO₃ that ionizes to HCO₃⁻ and CO₃⁻² is [HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

<h3>What is Balanced Chemical Equation ?</h3>

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

The equation for aqueous solution of H₂CO₃ is

H₂CO₃ → H₂O + CO₂

The charge balance equation is

[HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

Thus from the above conclusion we can say that The charge balance equation for an aqueous solution of H₂CO₃ that ionizes to HCO₃⁻ and CO₃⁻² is [HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

Learn more about the Balanced Chemical equation here: brainly.com/question/26694427
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8 0
2 years ago
The period 4 alkaline-earth metal has the name_______ . An isotope of this element having 20 neutrons has amass numberof _______
Cerrena [4.2K]

Answer:

The period 4 alkaline-earth metal has the name Calcium. An isotope of this element having 20 neutrons has a mass number of 40.

Explanation:

Looking at the periodic table 4th row for the alkaline-earth metal, we can find Calcium which has an atomic number of 20 (or protons number, or z). The mass number is given by the sum of protons and neutrons. If the number of protons in this case is 20 and the number of neutrons is also 20, the mass number A = 40.

6 0
3 years ago
Hemoglobin is the protein that transports oxygen in mammals. Different species of mammals have slightly different forms of hemog
Anna35 [415]

Answer;

= 64561.95 g/mole

Explanation;

mass of Fe in 100g = .346g

= .346 / 55.8452 moles

= 0.0061957 moles  

These represent 4 moles of Fe in the molecule so moles of hemaglobin

=  0.0061957/4  

= 0.0015489 moles  

these are in 100 g so mass of 1 mole = 100 / 0.0015489

= 64561.95 g / mole

molar mass of hemoglobin = 64561.95 g/mole

6 0
3 years ago
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