Atomic emission spectra are produced when the light emitted by an element passes through a prism. Which of the following statements is true regarding these spectra?A. All elements produce the same atomic spectra.
B. Elements produce continuous spectra.
C. Elements produce spectra with only a few distinct lines.
Answers
The spectra are not continuos and are different for every element. This permits to identify elements.
Final answer:
Atomic emission spectra are unique to each element and consist of distinct lines representing different energy levels.
Explanation:
The correct statement regarding atomic emission spectra is option C: Elements produce spectra with only a few distinct lines.
- The spectra produced by different elements are unique to each element, meaning that they have distinct patterns of lines.
- These lines represent the different energy levels that electrons can occupy within the atom.
- The specific pattern of lines in an atomic emission spectrum can be used to identify the element present in a sample of unknown composition.
Learn more about Atomic emission spectra here:
#SPJ6
Related Questions
Which of the following is a farming method that helps reduce the effects of wind erosion?
C3H8 + 5O2 -> 3CO2 + 4H2OAccording to this equation, which ratio of oxygen to propane is correct? 1- 5 grams O2 / 1 gram C3H8 2- 5 moles O2 / 1 mole C3H8 3- 10 grams O2 / 11 grams C3H8 4- 10 moles O2 / 11 moles C3H8
How many grams of CaCl₂ should be dissolved in 500.0 mL of water to make a 0.20M solution of CaCl₂?
Which development was a direct result of thebaby boom that followed World War II?(1) decrease in school construction(2) increase in suburbanization(3) decline in crime rates(4) rise in immigration
Answers
hope this helps!
Answers
Explanation:
As we all know that like disolves in like solvent.
Here both water and Ethanol are polar. Hence Ethanol soluble in water.
Moreover, both forms intermolecular hydrogen bonds. It enhances the solubility of ethanol.
Both water and Ethanol are called as associate liquids. Hence solubility is more.
Alcohols have higher boiling point than other hydrocarbons due to their polarity and from the fact that they form very strong intermolecular hydrogen bonding. This is due to the large difference in their electronegativity that forms between the oxygen and the hydrogen atom.
The mass increases as it changes from a liquid to a solid.
The mass decreases as it changes from a liquid to a solid.
There is no mass once the substance becomes a solid
Answers
Answers
When a metal reacts with a nonmetal, the resulting reaction often involves the transfer of electrons from the metal to the nonmetal, leading to the formation of ions with different charges. This type of reaction is known as a redox (reduction-oxidation) reaction. Redox reactions involve changes in the oxidation states (or oxidation numbers) of the elements involved, and they are fundamental in understanding chemical reactions.
Here's why such reactions are typically redox reactions:
Metals tend to lose electrons: Metals are located on the left side of the periodic table, and they have relatively low electronegativities. This means they have a tendency to lose electrons to achieve a stable, positively charged ion (cation) with a filled outer electron shell.
Nonmetals tend to gain electrons: Nonmetals are usually located on the right side of the periodic table and have higher electronegativities. They have a tendency to gain electrons to achieve a stable, negatively charged ion (anion) with a filled outer electron shell.
When a metal reacts with a nonmetal, the metal atoms lose electrons (undergo oxidation) and form positively charged ions, while the nonmetal atoms gain electrons (undergo reduction) and form negatively charged ions. This exchange of electrons leads to a change in the oxidation states of the elements involved, and it's the hallmark of a redox reaction.
For example, consider the reaction between sodium (a metal) and chlorine (a nonmetal) to form sodium chloride:
2Na (sodium) + Cl2 (chlorine) → 2NaCl (sodium chloride)
In this reaction, sodium loses one electron to become Na+ (oxidation), while chlorine gains one electron to become Cl- (reduction). The transfer of electrons between the two elements results in the formation of the ionic compound sodium chloride, and it's a classic example of a redox reaction.
While many metal-nonmetal reactions are redox reactions, it's important to note that not all reactions between metals and nonmetals involve a transfer of electrons. Some reactions can be purely ionic or involve covalent bonding without a net exchange of electrons, depending on the specific elements and conditions involved. However, the tendency for metals to lose electrons and nonmetals to gain electrons often makes redox reactions a common occurrence in these reactions
Explain why Alloys are harder than pure metals.
b. Drill heads also contain diamonds.
Describe as fully as you can the structure and bonding in diamond.
c. Polymers are produced from crude oil.
Describe the structure and bonding in thermosoftening polymer and explain why thermosoftening polymers melt when heated.
Answers
b. Drills use non pure diamonds that had carbon spots and because of this diamond (hardest mineral) is used on some drill heads to last longer
c. Everything in the world has a melting point of some degree some elements take 300° to melt while some can melt just from being in your hand
Answers
Answer: The volume of stock HCl solution required to make laboratory solution will be 0.25L
Explanation:
To calculate the volume of stock solution required to make the laboratory solution, we use the equation:
where,
are the molarity and volume of stock solution.
are the molarity and volume of laboratory solution.
We are given:
Putting values in above equation, we get:
Hence, the volume of stock HCl solution required to make laboratory solution will be 0.25L