In atomic spectroscopy, which of the following is NOT correct? Select one: a. ionisation of the analyte causes lowered absorbance results because the atom population is lowered. b. A hollow cathode lamp is the required light source for atomic emission spectroscopy. c. sputtering is a process in which atoms or ions are ejected from a surface by a beam of charged particles. d. Pressure broadening of atomic spectral lines increases with temperature. e. Doppler broadening of atomic spectral lines increases with temperature.

Q: Define or explain the following terms: a)Precipitate: b) Decantation: c)What are the safety rules…

A: Precipitation is the solid form which form in the chemical reactions.

Q: I. Objective: To gain practical skills in the chemistry laboratory such as measuring volumes using…

A: The volume of a liquid sample can be measured by suitable apparatus such as graduated cylinders,…

Q: A sample of salt water was collected weighing 112.09 grams.  After boiling for several minutes until…

A:

Q: These are showing as incorrect.  It is sulfite not sulfate. Ty!

A: SO3-2 is known as sulphite ion if one Oxygen is replaced by sulphur we get S2O2-2 , which is known…

Q: How was the precipitate obtained after filtration? (A By scraping from the filter paper and…

A: Filtration- the process in which solid particles in a liquid are removed by the use of a filter…

Q: You dissolved 3.00 g of calcium chloride and 3.50 g of sodium carbonate in tap water separately,…

A: CaCl2(aq)+Na2CO3(aq)→2NaCl(aq)+CaCO3(s)

Q: An ore is O a mixture of two or more metallic elements. a natural source from which a metal can be…

A: The metals can be extracted from the compounds which are occuring in nature in the earth crest. The…

Q: 2) You are tasked with determining the barium content of a sample containing barium nitrate mixed…

A: Mass percent of elements of a compound is the ratio of mass of element to the mass of whole compound…

Q: Mention the difference in concentration in relation to the amount of solute with respect to the…

A: We know that the solution is made by adding solute in solvent in a fixed or unfixed proportion. If…

Q: If no precipitate is observed when hydrochloric acid is added to a solution that contains a mixture…

A: A precipitate is formed when HCl is added to a solution containing mixture of cations when it forms…

Q: The names and chemical formulae of some chemical compounds are written in the first two columns of…

A: The objective of the question is to predict the major species present in the solution if the given…

Q: When ClO3- is converted into ClO4- the Cl changes oxidation state from ...

A: Given : We have to calculate the oxidation state of Cl.

Q: The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by…

A:

Q: How many grams of Cu(OH)2 will precipitate

A:

Q: A 35.7 mL soloution of MgCl₂ with unknown concentration is titrated to the equivalence point using…

A: 35.7 mL with unknown concentration of MgCl2 titrated to the equivalence point using 15.9 mL of 0.125…

Q: is formed from... Br NH2 N-H (A) (B) (C) (D) (E)

A:

Q: f) C=N (1) LiAlH4 (2) HCI in water

A: Given,The reaction is:f)

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A:

Q: Provide the molecular, complete, ionic, and net ionic equation for the reaction between aqueous lead…

A:

Q: 3. Calculate the volume of IM HCI needed to titrate 3.00 mL of 4% borax solution. (Hint: use the…

A: When a substance is dissolved in water, it dissociates into its corresponding ions. The solubility…

Q: Which of the following diagrams best represents the hydration of Nal when dissolved in water? The I…

A: Sodium iodide (NaI) is a strong electrolyte and dissociates completely into an aqueous solution.

Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: A strong electrolyte is a substance that completely dissociates into ions when dissolved in water,…

Q: H;PO4 HO Нeat

A: In E1 elimination reaction carbocation intermediate is formed... We know that 3° carbocation is more…

Q: The drawing below shows a mixture of molecules: key carbon hydrogen nitrogen sulfur охудen chlorine…

A: This question is based on the general chemistry. The balanced chemical reaction is, 2C2H2 + 5O2…

Q: Draw a molecular structure of a section of a snowflake. Use at least 25 molecules of water.

A: Snowflakes are water crystals that are formed by connecting the water molecules to a crystal…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.