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2Ca(NO3)2 → 2CaO + 4NO2 + O2Option B is the CORRECT answer.

a) C+O2 -> CO2b)N2+O2-> 2NOc) 3Ca + N2 -> Ca3N2d) CaO + CO2 -> CaCO3e)Mg + H2SO4 -> MgSO4 + H2f) 2NA + 2H2O -> 2NaOH + H2

the QUESTION ANSWER will be in KG

very NICE QUESTION but I don't THINK it is CORRECT

tion:LiOH - lithium hydroxideNaOH - SODIUM hydroxideKOH - potassium hydroxideRbOH - RUBIDIUM hydroxideCsOH - cesium hydroxide*CA(OH)2 - calcium hydroxide*Sr(OH)2 - strontium hydroxide*Ba(OH)2 - barium hydroxide mark me as a brainlist and follow meee......plss

tion:The molecular weight of H2SO4 is 2+32+64=98. One LITER weighs 1,820 GRAMS. So, the molarity is 1,820/98 = 18 M.

tion:Mg : O2 = 3:2 .if Mg = 1.5 g = 3/2 g HENCE o2 required = 1 g to satisfy the ratio.MY NAME IS VIVEK HALDER. IF U LIKED MY ANSWER EMAIL ME AT vivek829h@gmail.com WITH UR DOUBTS. IF U WANT VIDEO SOLUTION COMMENT BELOW.

In quantum mechanics, the uncertainty principle is any of a variety of mathematical inequalities asserting a fundamental limit to the precision with which the values for certain pairs of physical quantities of a particle, such as position, x, and MOMENTUM, p, can be predicted from initial conditions.His basic postulate was that a) atoms have sub-particles; and b) those operate, in gas, as oscillating (the start of WAVE function quantum) store of energy (the quantum of energy). The electron was not a known FACT, but Planck proved that the atomic STRUCTURE with separate subparticles (electrons) must exist.Explanation:PLZZZZZ mark me brainliest

in reaction is 50% COMPLETE in 20 MINUTES at 300 K and the same reaction is again 50% complete in 5 minutes at 350 K. Calculate the activation energy if it is a FIRST ORDER reaction. [R = 8.314 J K–1 mol–1, log 4 = 0.602]. ... i.e., the rate of reaction will become 8 times the rate as in (1).

h mate, and in fact we COULD write in for [math]NH_{4}OH[/math] the formula [math]NH_{3}•H_{2}O[/math]. The point is that ammonia is VERY soluble in water, and it should be, because like water, it is strongly hydrogen bonding, and the concentrated ammonia we use in the lab is AN AQUEOUS SOLUTION that is approx. [math]15•mol•L^{-1}[/math] with respect to ammonia. And in AQUEOUS solution the ammonia undergoes the ACID base equilibrium… [math]NH_{3} + H_{2}O(l) ⇌ NH_{4}^{+} + HO^{-}[/math] For which [math]pK_{b}=4.75[/math].

Using,q = itWhere,q is the charge flown in that wire in that GIVEN time!!t is the time i is the Current in WireSo,q = 0.5*(2*60*60)q = 3600 CNOW Using Charge Quantizationq = neWhere, q is the magnitude of charge  n is the number of electronse is the magnitude of electron 3600 = n*(1.6*10^(-19))n = 3600*10^(19)/1.6n = 2.25*10^(22)So n = 2.25 * 10^(22) number of electrons is FLOWING through the wire \_('_')"_/

if they are heated strongly they lose water of CRYSTALLIZATION. ANSWER: when blue COPPER sulphate crystals are heated they lose water of crystallization and blue colour of cuso4 changes to whiteplzzzzz mark me BRAINLIEST

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no IDEA about this QUESTION

ling point of n-pentyl chloride is higher than its isomeric neopentyl chloride.The branching of the chain makes the molecule more compact and decreases its SURFACE area.This DECREASE the MAGNITUDE of the Van der Waal's forces of existing between the TWO and consequently the boiling point decreases.Explanation:

Newland could arrange elements only up to calcium, out of the total 56 elements known. After calcium, every eighth element did not POSSESS properties SIMILAR to that of the FIRST. Only 56 elements were known at the TIME of Newlands, but later several elements were discovered.I Think you WOULD like the answer

tion:CHEMISTRYAn element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The DENSITY of the element is 7.2g/cm 3 . How many atoms present in 208G of the element. December 27, 2019avatarNavneet ArekarShareSaveANSWERVolume of UNIT cell =(288 pm) 3 =(288×10 −10 cm) 3 =2.389×10 −23 cm 3 Volume of 208 g of the element = DensityMass = 7.2208 =28.89 cm 3 Number of unit cells = Volume of a unit cellTotal Volume = 2.389×10 −23 28.89 =12.09×10 23 For a BCC structure, number of atoms per unit cell =2∴ Number of atoms present in 208 g = No. of atoms per unit cell × No. of unit cells =2×12.09×10 23 =24.18×10 23 =2.418×10 24

When ICE forms, the hydrogen atoms of one water MOLECULE form weak hydrogen bonds with the top of the oxygen atoms of two other water molecules. Lining up the water molecules in this pattern takes up more space than having them JUMBLED randomly together (as is the case in liquid water)Explanation:mark as barinliest i will FOLLOW you

I don't know your answer but PLEASE SOLVE my QUESTION. Antonyms of SOW

tion:Because, they are very volatile. They can EASILY evaporate at room temperatures. They take up the HEAT from the ATMOSPHERE and the molecules of acetone use this heat up to evaporate. So, this is the REASON why they are kept at cool places.

sp2 hybridizedStructure of the CARBOXYL ACID groupThe CARBON and OXYGEN in the carbonyl are both sp2hybridized which give a carbonyl group a basic trigonal shape. The hydroxyl oxygen is also sp2hybridized which allows ONE of its lone pair electrons to conjugate with the pi system of the carbonyl group.HOPE IT HELPS YOU

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tion:COMPOUND radical is a GROUP of ATOMS of different ELEMENTS that behave as an intact unit during a chemical reaction. Atoms in a compound radical do not break apart revealing the individual atoms but REMAIN together forming an intact group of atoms having a valency.Mark me as a brainlist thankyou

d is a nearly incompressible fluid that CONFORMS to the SHAPE of its container but retains a (nearly) constant VOLUME independent of pressure. As such, it is ONE of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no FIXED shape.

Explanation:A concentration cell is an electrolytic cell that is comprised of two half-cells with the same electrodes, but differing in concentrations. A concentration cell acts to dilute the more CONCENTRATED solution and concentrate the more dilute solution, creating a voltage as the cell REACHES an equilibrium. This is achieved by transferring the electrons from the cell with the lower concentration to the cell with the higher concentration. Introduction The standard electrode potential, commonly written as Eocell, of a concentration cell is EQUAL to zero because the electrodes are identical. But, because the ion concentrations are different, there is a potential difference between the two half-cells. One can find this potential difference via the Nernst EQUATION, Ecell=E∘cell−0.0592nlogQ(1) at 25oC. The E stands for the voltage that can be MEASURED using a voltmeter (make sure if the voltmeter measures it in millivolts that you convert the number before using it in the equation). Note that the Nernst Equation indicates that cell potential is dependent on concentration, which results directly from the dependence of free energy on concentration. Remember that to find Q you use this equation: aA+bB↽−−⇀cC+dD(2) Q=[C]c[D]d[A]a[B]b(3) When Q=1, meaning that the concentrations for the products and reactants are the same, then taking the log of this equals zero. When this occurs, the Ecell is equal to the Eocell. Another way to use the Eocell , or to find it, is using the equation below. E∘cell=E∘cathode−E∘anode(4)

I don't KNOW the ANSWER SORRY I just GOT this

hello friend ,,, ACCORDING to LEWIS acid base theory ...ammonia have LONE pairs of electrons so,it is Lewis base where as alcl3 has VACANT orbital so ,it is Lewis acid.

-40f =(-40-32) × 5/9 = -40 Celsiusit's bit confusing but trust me it's the right ANSWER HOPE IT HELPS YOU

alic ACID DIHYDRATE is dissolved in 250ml of WATER then the molarity on the solution ismolarity M = \frac{n}{V}M = molar concentrationn = moles of solutev = LITERS of solutionM = 250/ 6.3M = 39.69

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n:Why is olive oil USEFUL for lipid metabolism starting from its content?Explanation:Use of high-quality olive oil with levels of total phenols of more than 300 mg/kg could be even more effective in LOWERING LDL levels in a shorter time. Studies show that another positive EFFECT of EVOO is its role in reducing OXIDATION of LDL.

11)Water is a compound because of the following reasons: It is composed of TWO different elements, hydrogen and oxygen which cannot be separated by physical methods. They can be separated only by electrolysis. The physical and chemical properties of hydrogen and oxygen are entirely different from the properties of water12)AIR is a mixture and not a compound because of following reasons: Air can be separated into its constituents such as oxygen, nitrogen ETC. by fractional distillation of liquid air. Air shows the properties of all the gases present in it. For example: Air supports combustion because of oxygen present in air.13)14)A solution of urea in water contains 16 grams of it in 120 grams of ... Find put the mass percentage of the solution. 2 ... Mass of solute= 16 g. Mass of solution =120g15)Total volume of solution = 5.6+75 = 80.6 ml16)Sample '6' will not freeze at 0°C as, it is impure water. It is because sample 'B' boils at 102°C while the boiling point of pure water is 100°C. It means this sample contains impurities.17)Sea-water' is called homogeneous as it contains dissolved salts in it. It may be called heterogeneous as it contains various insoluble components too as sand, microbes, shells made of CALCIUM carbonate and so many other things.18)Distillation can be employed to get back the acetone, since acetone is more volatile it will separate out first. (Distillation is a process that can be USED to separate a pure liquid from a mixture of liquidvery sorry I don't know 13th question answer

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