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Answer:18

Explanation:There are 7 PERIODS and 18 groups in MODERN PERIODIC table

EXPLANATION:

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EXPLANATION: HEY MATE This Might Help You!!!!

3-Nitrocyclohexene  structure:-

PubChem CID:- 12452777

Structure:- Find Similar Structures

Molecular FORMULA:- C6H9NO2

Chemical NAMES:- 3-nitrocyclohexene SCHEMBL3674689 6925-08-2

Molecular Weight:- 127.143 g/mol

Explanation:

The electrons from the METAL are used to BOND to the ligand in ORDER to release the metal from EXCESS negative charge. Ni(CO) and Zeise's salt are compounds in which π back bonding occurs. Back bonding increases stability.

Answer:

EVAPORATION is the process in which the LIQUID states change into gaseous state is KNOWN as evaporation.

Vaporisation is the that occurs when a chemical is CONVERTED from a liquid or a solid to a gas the process is called vaporisation.

ANSWER:

ORANGE , LEMON is CITRIC ACID

Explanation:

pairing energy REFERS to energy associated with paired electrons sharing 1 orbital and it's effects on molecules SURROUNDED by it

Answer:

when dil hcl REACTS with NA2CO3 it gives a gas turns LIME water milky and has no effect on codified K2Cr207 paper (CO2) while conc.HCl cannot REACT

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For the PCl5 Lewis structure we first count the valence electrons for the PCl5 MOLECULE using the periodic table. Once we know how many valence electrons there are in PCl5 we can distribute them AROUND the central atom and attempt to fill the outer shells of each atom.

There are a total of 40 valence electrons in the PCl5 Lewis structure.

Remember when you draw the Lewis structure for PCl5 that Phosphorous (P) is in Period 3 on the Periodic table. This means that it can hold more than 8 valence electrons.

For the Lewis structure for PCl5 you should take formal charges into account to find the best Lewis structure for the molecule.

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Answer:

HOH. (chemistry) the molecular FORMULA of HYDROGEN hydroxide; (chemistry) the molecular formula for hydrohydroxic acid

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Hi,

Answer:

The volume “V” of the irregular shape vessel is 9.8 L.

Explanation:

Given data:

The volume of the irregular shape vessel is “V”

The other vessel has a volume Vo = 4 L at pressure, Po =10 atm and temperature, T = 35°C

The final pressure of the vessels after coupling them = 3 atm

To find: Volume “V”

SINCE pressure in the other vessel is reduced from 10 atm to 3 atm after being coupled with the irregular vessel. Therefore, change in the pressure in the other vessel = 10 – 3 = 7 atm

Using the Ideal Gas Law,

PV = nRT

Moles of substance in the irregular vessel after coupling = PV / RT = 3 * V / RT ….(i)

Moles of substance in the other vessel after coupling = (change in pressure) * Vo / RT = 7 * 4 / RT ….(ii)

Equating (i) & (ii), we get

3 * V / RT = 7 * 4 / RT

Or, 3 * V = 7 * 4

Or, V = 9.8 L

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ANSWER:ok

Explanation:

Answer:

The VOLUME of 1 mole of gas is 24.055 L.

Explanation:

GIVEN data:

No. of moles of gas, n = 1

Absolute TEMPERATURE, T = 20° C = 20 + 273.15 K = 293.15 K

Pressure, P = 101.35 kPa = 101.35 * 10³ Pa = 101.35 * 10³ * 9.869*10⁻⁶ = 1 atm ......  [ ∵ 1 Pa = 9.869 * 10⁻⁶ atm]

To find: Volume, V

Using the IDEAL Gas LAW, we get

PV = nRT

Where, R = ideal gas constant = 0.08206 L. atm. mol−1

V = n(RT/V)

Or, V = 1 * [(0.08206 * 293.15) / 1] = 24.055 L

Sound travels due to vibration and all that you hear is the CAUSE of THINGS VIBRATING and producing sound. Therefore if there is no medium which will mean that there is nothing to vibrate and HENCE sound WOULD not be able to travel.
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dichloroaceticacid>chloroaceticacid>

methanoicacid

based on stability of ANION FORMED after releasing H+

CORROSION is a natural PROCESS that CONVERTS a refined metal to a more chemically-stable FORM, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually METALS) by chemical and/or electrochemical reaction with their environment.

ANSWER:

NO it is WRONG

Answer:

2.315 MOLAR or 2.315 mol/l

Explanation:

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>>>>Concentrated HCl contains 38% HCl by mass I)what's the MOLARITY if density of solution is 1.19 g/cm^3

II) what is the volume required to make 1(one) litre of 0.10 M (molar) HCl.

ANSWER:

H+,NA+, Mg+

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Because NOTHING can GO of its own.

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ANSWER:

AROMATIC HYDROCARBON

Answer:

Examples of displacement reaction:

1. Zn + CuSO4 ➡ ZnSO4 + Cu
2. Cl2 + 2KBr ➡ 2KCL + Br2
3. Mg + CuSO4 ➡ MgSO4 + Cu
4. 2Al + 3CuSO4 ➡ AL2(SO4)3 + 3Cu
5. Fe + CuSO4 ➡ FeSO4 + Cu
6. Mg + 2HCL ➡ MgCl2 + H2
7. Fe + H2SO4 ➡ FeSO4 + H2
8. Zn + H2SO4 ➡ ZnSO4 + H2
9. Fe + 2HCl ➡ FeCl2 + H2
10. Zn + HCL ➡ ZnCl + H2

Formic ACID on reaction with NaOH gives Sod. Formate, which on being heated at 400 DEG C yields SODIUN oxalate, which on further being treated with dil. HCL yields OXALIC acid.
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Answer:

the answer and examples are GIVEN in the TWO pictures above.

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VALENCY of oxygen=-2

hydrogen=-1,1

sodium=1

magnesium=2

chlorine =-1

ANSWER:

Explanation

first find the molar mass of calcium carbonate

Mm[CACO3]=40+12+16x3=100g

then NUMBER of moles

n=m÷mm

n=50\100=0.5mol

mole ratio

HCL:CaCO3

1:1

n:0.5

nHCL=0.5

FIND THE MOLAR MASS OF HCL ACID

AFTER U CALCULATE THE MASS

n=m/mm

the multply the mass by 25percent

ANSWER:

An oxide of nitrogen CONTAINS 36.8%by weight of nitrogen. The FORMULA of the compound is

Answer:

An embedded system is a controller with a dedicated function WITHIN a larger MECHANICAL or electrical system, often with real-time computing constraints. It is embedded as part of a complete device often including HARDWARE and mechanical parts. Embedded SYSTEMS control many devices in common use today.

Answer:

DISPLACEMENT REACTION is a chemical reaction in which a more REACTIVE element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions. Example : Reaction of iron nails with COPPER sulphate solution.

ANSWER:

i don't naanammamaanN

@HEY dear!!

Number of MOLES of HCL USED:-

Number of moles of CaCo3 to react with HCL:--

Mass of CaCo3

= no. of moles × molar mass

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Answer:

11 more............. .................................

Answer:

STRUCTURAL unemployment occurs when a labour market is UNABLE to provide jobs for everyone who wants one because there is a mismatch between the skills of the UNEMPLOYED workers and the skills needed for the available jobs. ...

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ANSWER:

You can say that VELOCITIES are in ARITHMETIC progression

v1 :V2 : V3: v4 ....... : vn = 1:2:3:4 ....... :n

Answer:

❤️❤️A burette is a graduated glass tube with a tap at ONE end, for delivering known volumes of a liquid, especially in TITRATIONS. ... Furthermore, a pipette is smaller than burette. As another IMPORTANT difference between burette and pipette, pipettes are more accurate in releasing liquid in smaller quantities than burettes❤️❤️

Explanation:

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To Find the the MAXIMUM angle of FIF we need to FIRST draw the structure to GET and idea about the geometry

Steric number for IF7 = 7

Bond Pair = 7 Lone pair = 0

hybridization= sp3d3

electronic geometry - Pentagonal BiPyramidal

Hence two angle measures are present in F-I-F

i) 72°

ii) 180°

hence the maximum F-I-F angle in IF7 is 180°

ANSWER: Aome may and some may not.

Explanation: For instance, vanilla CHANGES it's smell WHEREAS onion does not

The Periodic Table of Chemical Elements is one of the most significant achievements in science, capturing the essence not only of chemistry, but also of PHYSICS and biology. It is a unique TOOL, enabling scientist to predict the appearance and properties of matter on the Earth and in the REST of the Universe. The Periodic Table of Chemical Elements is more than just a guide or catalogue of the entire known atoms in the universe; it is essentially a window on the universe, helping to expand our understanding of the world around us. Periodic table helps in raising global awareness of how chemistry promotes sustainable development and PROVIDES solutions to global challenges in energy, education, agriculture and health.

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Answer:

we can conclude that periodic table is EASY as it has a very particular easy method by which we can FIND the ELEMENTS position their groups their rows and ATOMIC mass and NUMBER

Because the PARTICLES in LIQUIDS are very close together (barely further apart than in solids) liquids do not easily compress, so their volume is fixed. GASES can also FLOW, so occupy the SHAPE of their whole container. They do not have a fixed shape. ... Gases therefore can be compressed or expanded.

Answer:

Sucrose or C12H22O11 is a COMPOUND as it is composed of carbon OXYGEN and hydrogen

ANSWER:

HYDROGEN

OXYGEN

FERRUM

Answer:

(B) is your answer mate PLEASE make me BRAINLIST

Explanation:

37 DIVIDED by 2 on both REACTANT and PRODUCT

Answer:

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Construction of Daniell Cell

It consists of a copper container filled with a concentrated solution of copper sulfate. ... The sulfate ions COME in contact of ZINC ROD release electrons to the rod and produce zinc sulfate through the oxidation reaction.

ANSWER:

I THINK 0.16is the answer

EXPLANATION:

No answer

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4th LINE 5TH ONE