How can spectra be used to identify the presence of specific elements in a substance.

Answers

Answer 1

Spectra can be used to identify the presence of specific elements in a substance by comparing its spectral pattern to the spectra of known elements.

Each element has a unique spectral pattern that can be used to identify it. The spectral pattern is created when the element is heated or energized in some other way and emits light. The light emitted from the element is split into its component colors or wavelengths when it passes through a prism or diffraction grating, which creates a spectrum.

The spectrum of an element consists of a series of lines at specific wavelengths that are characteristic of the element. These lines are called emission lines, and they are created when the electrons in the atoms of the element move from a higher energy level to a lower energy level and emit a photon of light of a specific wavelength. The wavelength of the emission lines is determined by the energy difference between the two energy levels involved in the transition.

For example, the spectrum of hydrogen consists of a series of lines at wavelengths of 656.3 nm, 486.1 nm, 434.0 nm, and 410.2 nm. These lines are known as the Balmer series, and they are characteristic of hydrogen. Other elements have their own unique emission lines that can be used to identify them. The presence of a specific element in a substance can be identified by comparing its spectral pattern to the spectra of known elements.

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Related Questions

Which type of cell is associated with the statements below? Fill in the blank with either (voltaic cell, electrolytic cell, both).
Non-spontaneous reaction occurs:
Spontaneous reaction occurs:
Oxidation occurs at anode:
Electrolyte supports electron flow:

Answers

Answer:

Non-spontaneous reaction occurs: electrolytic cell.

Spontaneous reaction occurs: voltaic cell

Oxidation occurs at anode: both

Electrolyte supports electron flow: both

Explanation:

H3PO4 + HCI
PCI5+H2O

Answers

Answer:

Balanced Chemical Equation:

H3PO4 + 5HCl → PCl5 + 4H2O

1. How many moles does 24 g of Mg contain?​

Answers

Explanation:

1 mole Of atom = GAM

MG=24g

GAM of Mg=24g

Therefore 24g=mole

Not My answer But I saw That You needed it.

Credit zeeshanfazil

thank him for the answer!

What type of heat transfer causes the water in the bottom of the pool to be cooler and the water at the top to be warm?

Answers

Answer:

i think its convection

Explanation:

Why are the elements in group VIIIA unreactive?

They are all gases.

They have an even number of electrons in their outer shell.

They have a full outer shell of electrons.

They each have a stable nucleus.

Answers

Number 1/letter A is the answer to your asked question!

The density of water H20 is bout 1 g/ml. If u have a bottled water that is 500 ml how many grams is this

Answers

Answer:

500 grams

Explanation:

500 milliliters x 1 gram per millileter = 500 grams.

Can someone help me with my stoichiometry homework, it is due tonight.

Answers

Answer:

1. 1 mole of NaCl.

2. 1 mole of H₂O.

Explanation:

The balanced equation for the reaction is given below:

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

1 mole of HCl reacted with 1 mole of NaOH to produce 1 mole of NaCl and 1 mole of H₂O.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above, we can see that 1 mole of HCl reacted completely with 1 mole of NaOH. Therefore, HCl is the limiting reactant and NaOH is the excess reactant since we have 3.6 moles of NaOH.

1. Determination of the amount of NaCl produced from the reaction.

NOTE: The limiting reactant is used to determine the maximum amount produced since all of it is consumed in the reaction.

The limiting reactant is HCl and the amount of NaCl produced can be obtained as follow:

From the balanced equation above, we can see that 1 mole of HCl reacted to 1 mole of NaCl.

Thus, 1 mole of NaCl was produced.

2. Determination of the amount of H₂O produced from the reaction.

From the balanced equation above, it is evident that 1 mole of HCl reacted to produce 1 mole of H₂O.

Thus, 1 mole of H₂O was produced.

Plants cells also gain energy through cellular respiration.

True or false?

Answers

True ................

Answer:

true

Explanation:

PLEASE HELP ME !!!!

The octet rule states that atoms tend to form bonds so that each atom has eight ________ in its _______
shell

Answers

Answer:

electrons..............

Answer:

electrons, outer

Explanation:

1 pt
Vanadium (V) is element 23 on the periodic table. A sample contains 2.88x1022 atoms of V. Calculate the amount of V.
1 pt
x mol V
1 pt
Resubmit
Show Approach Hide Tutor Steps

Answers

Ghbghvdezagnlmhhbbb

Which phrases describe the oceans? Check all that apply.

cover more than 70 percent of Earth
provide oxygen for life on Earth
contain fresh water
constantly in motion
interact with other Earth systemsWhich was found to be unconstitutional based on the Supreme Court’s ruling in Scott v. Sandford?

Answers

Answer:

the first one is the answer

Answer:

Phrases that describe the oceans are

cover more than 70 percent of Earth

constantly in motion

interact with other Earth systems

Explanation:

What are the two most important properties of ocean water?

Two of the most important characteristics of ocean water are its temperature and salinity.

Why do you think males and children are more likely to die from DHMO

Answers

Answer:

Dihydrogen Monoxide (DHMO) is perhaps the single most prevalent of all chemicals that can be dangerous to human life. Despite this truth, most people are not unduly concerned about the dangers of Dihydrogen Monoxide. Governments, civic leaders, corporations, military organizations, and citizens in every walk of life seem to either be ignorant of or shrug off the truth about Dihydrogen Monoxide as not being applicable to them. In 1997, the Dihydrogen Monoxide Research Division was formed and went online spreading the truth about DIHYDROGEN MONOXIDE. As word has spread, so too has the public awareness of Dihydrogen Monoxide and its implications involving the Internet and accessibility of such information. To that end, the DMRD's web site at DHMO.org continues to provide the most comprehensive collection of Dihydrogen Monoxide information available anywhere.

Explanation:

DHMO has been the dihydrogen monoxide. It has been responsible for the death of males and children as it causes tissue damage.

The DHMO has been the hydric acid and is one of the major constituents of acid rain. Gas has been responsible for greenhouse gas. Ingestion may lead to tissue damage with symptoms of nausea, vomiting, and electrolyte imbalance.

The companies dumping waste in the rivers and lakes have been warned for the removal of DHMO as it has been harmful to the males and children, and results in death.

For more information about Dihydrogen Monoxide, refer to the link:

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What type of weathering occurs when acid rain changes rocks? A. erosion
B. deposition C. chemical weathering D. physical weathering

Answers

Answer:

c...................................

biology and physics are so closely related that sometimes the fields overlap. what experiment might both biologist and physicists do

Answers

Answer:

Study how the body's nerve cells react to an electrical shock.

Explanation:

Answer:

Study how the body's nerve cells react to an electrical shock.

Explanation:

a p ec

the stimulus is related to?​

Answers

Answer:

The government :) lol

Explanation:

Mammals and plants do not belong in the same domain.

Fact:

Evidence:

Answers

False

Fact: Mammals and plants belong to the same domain, the Eukarya domain.

Evidence :All the organisms that possess a eukaryotic cell, plants, animals, protists, and fungi are in the Eukarya domain.

which statement best explains why chlorine is added to drinking water? A. Chlorine cures infections caused by bacteria or other microorganisms B. Chlorine protects people teeth against cavities C. Chlorine prepares the body to fight future infections D. Chlorine kills most pathogens in water

Answers

Answer:

to protect peoples teeth against cavities

Explanation:

i just know

Answer: its D

Explanation: A.P.E.X.

How many atoms would you find in 3.60 g of Boron?

Answers

Answer:

1.8 * 10^24 atoms

Explanation:

n = M(B) / m = 10.8 / 3.60 = 3 mol

N = n * Na = 3 * 6*10^23 = 1.8 * 10^24 atoms

Choose the formula for calculating percent composition.

Answers

Answer:

The equation for percent composition is (mass of element/molecular mass) x 100.

please mark me as a brainlist

What is the proper name for the chemical formula Cl4O5?

Answers

Answer:

Carbon tetraiodide

Explanation:

let me know if it works

What is the difference between fumarate and fumaric acid?

Answers

Answer:

the difference is fumaric acid the carboxylic acid groups are trans (E) and in maleic acid they are cis (Z)

Explanation:

and  Fumarate is an intermediate in the citric acid cycle used by cells to produce energy in the form of adenosine triphosphate (ATP) from food

Which of the following may be a reason why climbing up objects would help the ivy survive?

Answers

I need the answers to help, but it will probably be something along the lines of climbing objects for sunlight.

20 POINTS!!
__________ aid the immune system in mounting attacks against cancer cells by targeting antigens only found on the surface of cancer cells.

A. Monoclonal antibodies
B. Interferons
C. CRISPR
D. Vaccines
E. Interleukins

Answers

Answer:

B. Interferon

Explanation:

interferon targets any lingering melanoma cells and prevents them from spreading and growing.

PLS HELP 6TH GRADE ITS ONE QUESTION ABOUT SCIENCE

Answers

Answer: The answer is C

Explanation:

Your answer would be C. :)

industrial gases cause acid rain why​

Answers

because the industrial gas is very harmful for us it is made up chemical and toxic gases

Answer:

The usual culprit is burning coal.

Explanation:

This produces a lot of carbon dioxide as well as sulphur dioxide. Other industrial processes, and vehicle emissions, produce similar oxides unless they are 'scrubbed' out. They react with atmospheric moisture to produce acids like carbonic, sulphurous and nitrous acids. Which is then precipitated. It should be remembered that a volcanic eruption has this effect too.

What is the difference between an empirical formula and a molecular formula?

Answers

Answer:

The empirical formula simply states the ratios of the elements that make up the molecule, while molecular formulas specify the amounts of each element exactly, not just giving the ratio. Let's take ethane (C2H6) as an example.

Which statement about copper, diamond, and silicon(IV) dioxide is correcta)Copper and silicon(IV) dioxide have similar electrical conductivityb)In diamond the carbon atoms are covalently bonded as flat sheetsc)In silicon(IV)dioxide the silicon and oxygen atoms are covalently bonded in flat sheetsd)The structure of copper includes a lattice of positive ions

Answers

Answer:

In diamond the carbon atoms are covalently bonded as flat sheets

In silicon(IV) dioxide the silicon and oxygen atoms are covalently bonded in flat sheets

The structure of copper includes a lattice of positive ions

Explanation:

Diamond and silicon(IV) dioxide are covalent network solids. Covalent network solids are made up of atoms joined to one another by covalent bonds to form a giant lattice, The solids are hard and have a very high melting point. They do not conduct electricity. So, for both diamond and SiO2, atoms are covalently bonded to yield flat sheets in a covalent bonded network solid.

Copper is a metallic substance having metallic bonds, a metallic crystal consists of positive ions and a cloud of electrons.

What does it mean if a solution is a "weak acid "? Strong acid? Give logical ph values for each

Answers

Answer:

A weak acid is an acid that partially dissociates into its ions in an aqueous solution or water. In contrast, a strong acid fully dissociates into its ions in water. At the same concentration, weak acids have a higher pH value than strong acids.

Explanation:

:)

Find the amount of water containing 14.02 * 10²⁴ molecules​

Answers

Answer:

14.02 x 10²⁴ molecules

Explanation:

To solve this problem we will use Avogadro's number: It relates to the number of molecules (or atoms) contained in 1 mol of any given substance:

14.02 x 10²⁴ molecules ÷ 6.023 x 10²³ molecules/mol = 23.28 moles

Thus, 23.28 moles of water contain 14.02 x 10²⁴ molecules.

Given a 6.80 g sample of H2O how many grams of oxygen is produced assuming the decomposition goes to completion

Answers

Answer:

6.0444g

the formula must be after balancingknown as 36(mass) of H2O can produce 32(mass) of O2so 6.80g of H2O can produce (x)g of oxygen

According to the stoichiometry of the decomposition of water 6.04  grams of oxygen is produced assuming the decomposition goes to completion.

What is stoichiometry?

Stoichiometry is  defined as the determination of proportions of elements or compounds which are present  in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is useful in balancing chemical equations.According to the reaction, 36 g water gives 32 g oxygen thus 6.80 g water will give 6.80×32/36=6.04 g.

Thus, on  decomposition of water 6.04  grams of oxygen is produced assuming the decomposition goes to completion.

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