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11thChemistryStructure of AtomDevelopment Leading to Bohr's Model of AtomCalculate the wavelength, f...CHEMISTRYavatarAsked on October 15, 2019 byKratika SpandanaCalculate the wavelength, FREQUENCY and wave NUMBER of a light wave whose period is 2.0×10 −10 s.MEDIUMShareStudy laterVIDEO EXPLANATIONANSWER(i) The frequency of the light wave is period1 = 2.0×10 −10 S1 =5×10 9 /s.(ii) The wavelength of light wave is νc = 5×10 9 /s3×10 8 m/s =6.0×10 −2 m.(iii) The wave number of light wave is νˉ = λ1 = 6.0×10 −2 1 =16.66/m.

Series Lyman series (n′ = 1) Balmer series (n′ = 2) PASCHEN series (Bohr series, n′ = 3) Brackett series (n′ = 4) Pfund series (n′ = 5) Humphreys series (n′ = 6) Further (n′ > 6)Explanation:

trueExplanation:this STATEMENT is true because when we HEAT WATER the molecule of the water STARTS moving here and there.

tion:The SHIFT of an absorption maximum towards longer WAVELENGTH or lower energy is called as bathochromic shift. It may be PRODUCED due to presence of an auxochrome or CHANGE in SOLVENT polarity.

on is when a REFINED metal is naturally converted to a more stable FORM such as its oxide, HYDROXIDE or SULPHIDE state this leads to deterioration of the MATERIAL

Structure and properties. At room temperature carbon dioxide is a colourless and ODOURLESS gas. The carbon dioxide molecule is made up of one carbon atom joined to two oxygen ATOMS. This MEANS it has a CHEMICAL FORMULA is CO₂.

I OKAY Explanation:3Fe + 4H2O ---> FE3O4 + 4H2 (GAS )

Carbon tetrachloride, also known by MANY other names is an organic compound with the CHEMICAL formula CCl₄. It is a colourless liquid with a "SWEET" SMELL that can be detected at low LEVELS. It has practically no flammability at lower temperatures. Explanation:hope it will help you....

:-(i) Magnesium ion - Mg²⁺(ii) Bisulphate radical - HSO₄⁻(iii) Potassium ion - K⁺(iv) Phosphate radical - PO₄³⁻(v) Sulphite radical - SO₃²⁻Some Extra Information:-Ion: Compounds COMPOSED of metals and non-metals contain charged species. The charged species are known as ions. An ion is a charged particle and can be negatively or POSITIVELY charged. Cation : A positively charged ion is called cation. Example : Na⁺, K⁺ etcAnion : A negatively charged ion is called anion.Example : Cl⁻, O²⁻ , Br⁻ etcRadical : A radical is an atom of an element or a GROUP of ATOMS of different elements that behaves as a single unit with a positive and negative charge on it.Example : NH₄⁺ , OH⁻ etc

tion:Atomic MASS of MG=24g=1 MOLE of Mg∴ 24g =1 mole of Mg contain 6.022×10 23 atom ∴ 6gm contains 246.022×10 23 ×6 =4×6.022×10 23 atomsNow according to question, there are 6.022×10 23 atoms of NA 23gm of Na contains 6.022×10 23 atoms∴6.022×4×10 23 atoms of Na weighs 6.022×10 23 23×6.022×10 23 ×4 ⇒92gm

cing a second electron into a 3d orbital produces more repulsion than if the next electron went into the 4s orbital. There is not a very BIG GAP between the energies of the 3d and 4s orbitals. The REDUCTION in repulsion more than compensates for the energy NEEDED to do this.

By adding the lemon juice to the potassium permanganate, the permanganic acid can be formed which is an inorganic compound. In this reaction, the potassium permanganate will OXIDIZE the lemon juice with the evolving of oxygen or CARBON dioxide GAS or with a brown precipitate.Explanation:

please MARK me as brainlliestExplanation:A solvent (such as water, oil or isopropyl alcohol) is allowed to absorb up the paper strip. ... Different molecules RUN up the paper at different rates. As a RESULT, components of the solution separate and, in this CASE, become visible as strips of color on the chromatography paper.Hope this will help you

did not understandExplanation:

tion:Contact process, modern industrial method of producing sulfuric acid; it has LARGELY replaced the chamber, or lead-chamber, process. ... SULFUR dioxide and oxygen, PASSED over a hot catalyst, unite to form sulfur TRIOXIDE, which in turn COMBINES with water to make sulfuric acid.follow

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Parameter Compound MixtureMeaning A compound is a pure form comprising of two or more elements in a chemical combination A mixture is an impure substance involving two or more substances that are PHYSICALLY mixed.Composition The presence of elements in compounds is in a definite quantity The presence of substances in mixtures is not in a definite quantityFormula A compound certainly has a specific formula on the basis of its constituents Mixtures are devoid of a chemical formulaProperties The properties of a specific type of compound are definite and there is no VARIATION in them The properties of a mixture tend to VARY due to their dependence on the type of substances presentSubstances The formation of new substances always results in a compound because of the mixing of properties of the various elements Formation of new substances does not take place from the mixtures because the properties of its constituents are not changeableSeparation The elements of a compound are not easy to separate by physical methods The substances of a mixture are certainly easier to separate by various physical methods like chromatography, evaporation, FILTRATION, etcChange of heat There is a change of heat during the formation of a particular compound There is no heat change in mixtures when their formation takes placeMelting or Boiling point Compounds have an unchangeable definite melting or boiling point Mixtures lack a definite melting or boiling pointExamples of Compound and Mixture Methane, salt, baking soda, etc Brass, CHROMIUM, bismuth, etc

In a Fmoc SYNTHETIC APPROACH,the detachment of the peptide from its solid support is usually achieved by using trifluoroacetic ACID(TFA) as the protecting groups for the SIDE chains in Fmoc synthesis are acid labial, a single STEP can be employed will cleave both the teptide from the resin and remove the protecting group.

Explanation:One mole contains exactly 6.022 140 76 x 1023 elementary entities. This number is the fixed numerical value of the Avogadro constant, NA, when EXPRESSED in the unit mol–1 and is CALLED the Avogadro numbe

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I THINK kentoneExplanation:please FOLLOW me and MARK my ANSWER as Brainliest and please THANK my all answers

yes.. EXPLANATION:ENERGY of dash is directly proportional to "N" VALUE

The circuit can be reduced, step by step, to a single equivalent resistance. The 8 ohm and the 8 ohm are connected in parallel , and so they can be replaced by an equivalent resistor Rp of 4 ohms, using the below equation.Rp= (8+8)(8×8) =4ohmsThis resistor is connected in series with the 4 ohm resistor R1. The total resistance RT of the circuit is thenR t =R 1 +R p =4+4=8ohms.Since the 4 ohm and the 4 ohm are connected in series, they have the same current I1, which must be EQUAL to the current of the BATTERY. Using Ohms LAW we get,I= RV = 88 =1A.Hence, the current flowing through the resistor R1 (4 ohms) is 1A.Now the potential difference across the resistor R1 (4 ohms) is given as follows.V=IR=1×4=4VHence, the potential difference across the resistor R1 (4 ohms) = 4V.Explanation:I hope its right

34.0147 g/molExplanation:MELTING POINT: -0.43 °CFormula: H2O2Density: 1.45 g/cm³

Hydrogen PEROXIDE is a mild antiseptic used on the skin to PREVENT infection of minor cuts, scrapes, and burns. It may also be used as a mouth rinse to help REMOVE mucus or to relieve minor mouth irritation (e.g., due to canker/cold SORES, gingivitis).May it helps youPlease mark me as BRAINLIEST

1/4 mole of CH4 will requires = 1/4 ×2 moles of O2 = 0.5 MOL of O2 for COMPLETE combustion. So 11.2 L of O2 is required for complete combustion of 4 G CH4.

(a) is the ANSWER

The molecular WEIGHT of NaOH is 40 g/mol.The NUMBER of moles of NaOH 40 g/mol5 g =0.125 moles.500 ml water corresponds to0.500 L.The MOLARITY of the solution = 0.500 L0.125 moles =0.25 M.I hope its RIGHT .EXPLANATION:I

can t UNDERSTAND U R QUESTION!!

these PICTURES contain your answer. hope it helps you!if yes then PLEASE MARK my answer as brainliest!!!! please please please please please please!!!!!

128 G of OXYGEN GAS WOULD be required C +. O2 = CO21×12 1×16×24C + 4 O2. = 4CO248g 4×32so there is 4×32=128 g oxygen is required

in NEAR the OCEAN areasExplanation:

its VEG MADE by TREES coverExplanation:

I THINK the ANSWER is CONDENSATION..

The nucleus of an atom MAINLY consists three type of particles, i.e. electrons which are negatively charged, PROTONES which are POSITIVELY charged and neutrons which are nutral. Atom is electrically neutral because the total positive charge ( of PROTONS) is cancelled by the total negative charge (of electrons