How many moles of MnO, are produced when 4.30 kg of oxygen gas completely reacts according to the balanced chemical reaction: 2 Mn(s) + 3 O2(g) → MnO,(s) STARTING AMOUNT

Q: 7. Which two metals do magnets attract or repel? a. Gold and silver b. Platinum and titanium c. Iron…

A: Given statement is :  Which two metals do magnets attract or repel ?  Options are :  a. Gold and…

Q: Electronic configuration of Chlorine is Select one: O 1s2 2s2 2p° 3s? 3p3 O 15 2s2 2p° 3s2 3p° O 1s…

A:

Q: Use your calewlator to complete the following maltiplication/divinion problems Report your final…

A: Multiplication of significant figures :-  The answer of multiplication should have the same number…

Q: what two movements form an orbit?

A: An orbit is the path one object in space takes around another.

Q: Atoms are mostly empty space.  True  False

A:

Q: Which phase of the Moon occurs when the moon is between Earth and the Sun? O New Moon O Waxing…

A:

Q: Tides are caused mainly by O Wind O The gravity of the Moon O Magnetic fields O Storms

A: The rise and fall of the water level of the sea are known as tides.

Q: Humans have three types of cone cells in their eyes, which are responsible for color vision. Each…

A: Given,  The wave length of the light = 512. nm The frequency of this light is:

Q: What is the surface appearance of a mercury

A: Mercury is a rocky planet with a huge iron core which makes up a large part of its interior.…

Q: 21 6. ... ACROSS 1. After you remove an electron from a neutral atom. 5. Mendeleev developed the…

A: Given: The statements related to periodicity of elements & properties of elements. The solution…

Q: Show how Lavoisier's conservation of matter can be explained on the basis of the assumptions of the…

A: A question based on atomic structure that is to be accomplished.

Q: Calculate Zeff for the last electron of neon. Enter your answer with two decimal places.

A: Slater's rule : it is used to calculate the effective nuclear charge felt by a particular electron.…

Q: In which of the following situations does the potential energy decrease? Check ALL that apply. a. A…

A:

Q: Consider helium and argon gases. a.Why do helium-filled balloons rise? Justify your answer using a…

A: (a) Helium balloons also work by the law of buoyancy. ... The helium balloon displaces an amount of…

Q: 1) Consider the Bohr Model and the Quantum Mechanical Model. a) What part(s) of the Bohr model are…

A: Parts of Bohr model that is present in Quantum mechanical model:  1) Both the above models describe…

Q: 04:- Who........ 1-Made the first real periodic table. na elements according to their propertie=…

A: We are authorized to solve only one question at a time. Please post the rest of the questions…

Q: Ruogpas 'Saa Part A Before Mendeleev, Newland observed a distinct pattern in the elements and…

A: English Chemist in the year 1865 first noticed a periodic pattern in element properties and…

Q: Ultraviolet light rays can be harmful and helpful to humans. O True O False

A: The Ultraviolet light is high energy radiation having energy greater than visible light.

Q: Nitrogen 1s 2s 2p 3s a. Chlorine 1s 2s 2p 3s Зр b. Sodium_ 1s 2s 2p 3s Зр c. Neon 36 3n

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: what are the different ways a magnet can move an object?

A: Step : 1           What are the different ways a magnet can move an object?

Q: gth in nm of 7.88 x 1014 s1 light. your answer. Do use proper significant figures in your answer.…

A: We will calculate wavelength

Q: Which element has the largest atomic radius? explain your answer in a separate sheet. O H O F O Na

A: Given :- symbol of elements H, F, Na and O  To identify :- element with largest atomic radius

Q: Which of the following atoms most easily loses an electronic? A.Te B.Ba C.C D.P E.Cl

A:

Q: Is the size of chlorine smaller or larger than fluorine? Justify your answer.

A: Given, size comparison between chlorine and fluorine.

Q: Part A Be ion Express your answer as a signed integer in the form 3+. Request Answer Previous…

A: Beryllium is a second group element.  Atomic number of beryllium is 4.  It loses two electrons and…

Q: f Chlorine is

A:

Q: Light shining on a strip of metal can dislodge electrons. Do you think this is more consistent with…

A: The solution is given below -

Q: Enter just the number. No other text. In the orbitals listed below, we need to determine how many…

A: Number of electrons in s orbital = 2Number of electrons in p orbital = 6Number of electrons in d…

Q: The magnitude of the electric force between two particles depends on which factors? O A. Mass and…

A:

Q: O ELECTRONIC STRUCTURE Interconverting the wavelength and frequency of.. rays have a wavelength…

A: λ=7.51 nmλ=7.51×10-9 m1 PHz is Petahertz1PHz=1015 HzUsing the relation, ν=cλν=frequency…

Q: Please help me complete this

A: The electronic configuration is of the given elements can be given as folows:

Q: formation of MX(s) assume all atoms used are monatomic solids in the standard state

A: Here we have to write the formation equation of MX(s) assuming all atoms used are mono atomic solids…

Q: Explain Isotopic peak? Please answer at your own easy words. Answer should be to the point.

A: Mass spectrometry is used to determine the structure of the compound based on the fragmentation.…

Q: Which one of the following has the smallest radius?   a. P b. I c. Fe d. Cl e. Na

A: On going left to right in periodic table radius decreases While on going top to bottom in periodic…

Q: 8. What improvement did Bohr make to Rutherford's model of the atom? a. Bohr first added the nucleus…

A: Atomic models are conceptual models that describe the structure and behavior of atoms.

Q: Humans have three types of cone cells in their eyes, which are responsible for color vision. Each…

A: Given data, wavelength=543nm we know, 1nm= 10-9m therefore, 543nm=543x10-9m

Q: Fill in the Blanks a. 1s² 2s²2p6 3s²3p6 4s²3d¹04p4 b. 1s² 2s²2p6 3s²3p6 4s² 3d¹04p5 c. 1s² 2s²2p…

A:

Q: Using the models below, show your work to derive the relationship between d and r in each unit.…

A:

Q: 10. Describe three different types of orbits.

A: There are three types of Earth orbits: High Earth orbit, Medium Earth orbit, and Low Earth orbit.

Q: What type of celestial object is the Sun?a) Planetb)Starc)Asteroidd)Comet

A: The Sun is the star at the center of our solar system. It is a nearly perfect sphere of hot plasma,…

Q: a. Caffeine absorbs light along the visible region of the electromagnetic spectrum.   True  False

A: (a) Caffeine absorbs radiation with a wavelength around 260nm. answer: false

Q: 2. A sample of argon weighing 11.1 g-oceupies a volume of 15.7 L. What is the new volume if the mass…

A: Using the ideal gas equation: PV = nRT P is the pressure, V is the volume, n is the no of moles, T…

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.