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ANSWER:

the MEASURE of CONCENTRATION of a substance in a solution is CALLED volume percentage.

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Explanation:

Answer:

Coking coal is converted to coke by driving off impurities to leave almost pure CARBON. The physical properties of coking coal CAUSE the coal to soften, liquefy and then resolidify into hard but porous LUMPS when heated in the ABSENCE of air. Coking coal must also have low sulphur and phosphorous contents.

ANSWER:

because of OXIDIZING AGENT

ANSWER:

Atomic NUMBER MEANS the number of proton PRESENT in the ATOM.

Answer:

Boric acid, also known as hydrogen borate, is a weak MONOBASIC LEWIS acid of boron with the chemical formula H3BO3

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ANSWER:

when 4 molecules of NA react with 2 molecules they give a RESULT as 2 molecules of NaO

ANSWER:

DEVICE 12.044×10^22 by 6.022×10^23 and you will GET your answer

ANSWER:

when LIMESTONE is heated DECOMPOSTION TAKES place

ANSWER:

A BETTER answer will be ADDED here

Explanation:

EXPLANATION:

where is your QUESTION

PLZ WRITE question PROPERLY

in this EQUATION the PRODUCT should be AL2O3

ANSWER:

Dumas method is a procedure that is followed in analytical chemistry to determine an UNKNOWN chemical compound's molecular weight. This procedure was designed by  Jean-Baptiste Dumas BACK in 1826.

This method is profoundly more suitable for finding volatile ORGANIC compounds' molecular weight.

Percentage of Nitrogen:                                    

=

=  

= 9.24 %

HENCE the Nitrogen percentage in the compound is 9.24%

Answer:

The ELECTRONIC configuration of the ELEMENT rubidium is :

➡2,8,18,8,1.

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• IRON +3chlorine =iron III CHLORIDE

ANSWER:

ZINC BLENDE...........

Answer:

Ohm's LAW is MADE for finding RESISTANCE......

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ANSWER:

fabrics and clothes

Explanation:

Weaving is a method of textile production in which two distinct sets of yarns or threads are INTERLACED at right angles to FORM a fabric or CLOTH. Other methods are knitting, crocheting, felting, and BRAIDING or plaiting. The longitudinal threads are called the warp and the lateral threads are the weft or filling.

EXPLANATION:

it is CALLED FILM THICKNESS MEASUREMENT

ANSWER:

MIXTURES such as conctete,SUGAR and SAND,ICE cube with colaetc are hetrogeneous mixtures

ANSWER:

PLZ ELABORATE your question

Explanation:

ANSWER:

BACL2 has a higest BOILING point

Explanation:

BaCl2 is BARIUM CHLORIDE

Answer:

2,8,16,11 is the ELECTRONIC CONFIGURATION

percentage weight of C = 20%

percentage weight of H = 6.7%

percentage weight of N = 46.67%

so, percentage weight of O = 100 - (20 + 6.7 + 46.67) = 26.63 %

finding percentage - mass VALUE of each atom.

for oxygen, O ⇒ 26.63/16 ≈ 1.66

for hydrogen, H ⇒ 6.7/1 = 6.7

for carbon, C ⇒20/12 = 5/3 ≈ 1.66

for nitrogen , N = 46.67/14 ≈ 3.33

finding simple ratio of (percentage-mass)

i.e., O : H : C : N = 1 : 4 : 1 : 2

so, empirical formula will be

given, molecular mass = 60 [ you did MISTAKE in typing ]

so, 60 = n × (12 + 4 + 2 × 14 + 16)

n = 1

hence, molecular formula is =

Answer:

1 MOLE of NH4 will contain NA*10 electrons. 3.6 gm of AMMONIUM ion is 3.6/18 MOLES of NH4 = 1/5 moles = 0.2 moles of NH4. 1 mole of NH4 CONTAINS NA*10 e-. The above is the no. of electrons of 3.2 gm of CH4.

Explanation:

Given

No. MOLES in sugar

= 0.5 mol

Molar mass of sugar

(C12H22O11 )

=> 12x12 + 22 X 1 + 11 x 16

=> 144 + 22 + 176

=> 342 G /mol

we know that

mass = molar mass x no of moles

mass = 342 x 0.5

mass = 171 g

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ANSWER:

this is your answer

EXPLANATION:

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Answer:

me = 91KG , MQ = 167 kg

Explanation:

ATQ

me = 9.1 × 10 = 91kg

mq = 1.67 × 100 = 167kg

ANSWER:

more volatile LIQUID DISTILLED out FIRST and then less volatile liquid distilled out

Answer:

Chandrayaan-2 is India's second lunar exploration mission after Chandrayaan-1. Developed by the Indian Space Research Organisation, the mission was LAUNCHED from the second launch pad at Satish DHAWAN Space Centre on 22 JULY 2019 at 2.43 PM IST to the Moon by a Geosynchronous SATELLITE Launch Vehicle Mark III.

ANSWER :Here is the answer

EXPLANATION:

Answer:

4 ATOMS are of NITROGEN

Answer:

Hey Yashvi here's your answer...

Here's

7. Tomato juice --Dark orange--4.1--Acidic

8. TAP water--Green--7.0--neutral

9. 1M NAOH--Dark blue --13 to 14-- Basic

10. 1M HCL--Red--1.0--Acidic

Tane HELP kare to thik 6.......

All the best for boards...

Yours Sincerely

Jalay...

Explanation:

12 mg=12×10^-3 g

number of MOLE

=12×10^-3÷12=0.001 mol

number of ATOM =0.001×6.022×10^23

=6.022×10^20

Answer:

Fermentation is the process in which a substance breaks down into a simpler substance. MICROORGANISMS like yeast and BACTERIA usually play a role in the fermentation process, creating BEER, wine, bread, kimchi, yogurt and other foods. Fermentation comes from the Latin word fermentare, meaning “to leaven.”Fermentation is a metabolic process in which an organism converts a carbohydrate, such as starch or a sugar, into an alcohol or an acid. For example, yeast performs fermentation to obtain energy by converting sugar into alcohol. Bacteria perform fermentation, converting carbohydrates into LACTIC acid.

Explanation:

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ANSWER: EQUIVALENT WEIGHT of METAL =20G

Answer:

223pm

Explanation:

the BOND LENGTH of X=99pm

the bond LENGHT of Y=124pm

so,

bond lenght ofX-T=223pm

ANSWER:

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Answer:

10

Explanation:

Given An alloy of pb-AG weighing 1.08 g was dissolved in dilute HNO3 and the total volume was made to be 100 ML. A silver electrode was dipped in the solution and the emf of the CELL set up pt(s), h2(g) | h+(1m) || ag+ (aq) | ag(s) was 0.62 v. If eocell = 0.80 v, then what is the percentage of ag in the alloy?

We know that

E cell = E o cell – 2.303 RT / nF LOG [ h+ / Ag]

E cell = Eo cell – 0.06 log [h+/ Ag]

0.62 = 0.80 – 0.06 log [ h+ / Ag]

-0.18 = -0.06 log 1 / Ag

 [ Ag+] = 10^-3 Molar

Weight of Ag = 10^-3 x 108

                        = 0.108 g

Weight % of Ag = 0.108 / 1.08 x 100

                           = 10%

catenation,TETRAVALENT, MULTIPLE bonding of carbon

Explanation:

catenation means bonding with itself

tetravalency means having a valency of 4

multiple bonding means have ABILITY to form multiple BONDS

Answer:

Separation of Common salt from Ammonium chloride…

Explanation:

(a). Now what you mentioned here is that you are PROVIDED Tripod stand, China-dish, Wire gauge, BUNSEN burner, glass rod, cotton wool and match box.  

In this process it is certain that you were not provide by inverted funnel. So this is the apparatus that was actually MISSING.

(b). The technique that is being used for separating this mixture is commonly termed as Sublimation method. We are all aware that ammonium chloride will tend to change to gas state from its Solid state the moment it is heated on fire.

So now the mixture contains VOLATILE component (sublimate) while the other is Common salt (non sublimate) component as IMPURITY.

Explanation:

In chemistry and ATOMIC PHYSICS, the electron affinity (Eₑₐ) of an atom or molecule is DEFINED as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the GASEOUS state to form a NEGATIVE ion

Answer:

a.x=y

Explanation:

Neutrliasation TAKES place only in equimolar CONDITION.

Answer:

Acetophenone being a methyl ketone responds to this TEST, but BENZOPHENONE does not. (III) Phenol and benzoic acid can be distinguished by ferric chloride test. Ferric chloride test: ... But benzoic acid reacts with neutral FeCl3 to give a buff COLOURED PPT. of ferric benzoate.

Answer:

MENDELEEV REALIZED that the physical and chemical PROPERTIES of elements were related to their atomic MASS in a 'periodic' way, and arranged them so that GROUPS of elements with similar properties fell into vertical columns in his table.

EXPLANATION:

i THINK (a) is RIGHT ANSWER

ANSWER:

heyyy

Explanation:

okkk G de DIYA

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EXPLANATION:

density of any matter depends on its GIVEN mass,not MOLECULER mass.

4Na+O2-2Na2O

Na2O+H2O-2NaOH

NaOH+HCl-NaCl+H2O

Answer:

In chemical nomenclature, the IUPAC nomenclature of ORGANIC chemistry is a SYSTEMATIC method of NAMING organic chemical compounds as RECOMMENDED by the International Union of Pure and Applied Chemistry (IUPAC). ... IUPAC names can sometimes be simpler than older names, as with ethanol, INSTEAD of ethyl alcohol.

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SCHRODINGER and HEISENBERG MODEL....