Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

2.8g

Explanation:

HCOOH → CO+H2O

(MOLES)i = 2.346 = 1/20 0 0

(moles)i = 0 1/20 1/20

H2C2O4 H2SO4 → CO+CO2+H2O

(moles)i = 4.5/90 =1/20 0 0 0

(moles)i = 0 1/20 1/20 1/20

CO2 is absorbed by KOH

Thus, the remaining product will be only CO

Moles of CO formed from both REACTIONS -

= 1/20 + 1/20 = 110

Left mass of CO = moles × MOLAR mass

= 1/10×28

= 2.8g

Thus, the remaining weight will be 2.8g

ANSWER:

experience

Explanation:

EXPLAIN it PROPERLY 5HE QUESTION

Answer:

benzene contains six carbon and six HYDROGEN ATOM these atom are arranged in vcyclic with ALTERNATE single and DOUBLE BOND

Answer:

An alpha PARTICLE is a fast moving packet CONTAINING two protons and two neutrons (a helium nucleus). Alpha particles carry a CHARGE of +2 and strongly interact with matter. PRODUCED during alpha decay, alpha particles can travel only a few inches through air and can be easily stopped with a sheet of paper.

Answer:

C12 is USED as standard in relative ATOMIC mass amu as it is a best isotope which has same mass no. and different atomic no.

Hope it will HELP u

ANSWER:

Less average SPEED and less the kinetic energy

Explanation:

VAVG=(8RT/M)^1/2 and the FORMULA of kinetic energy =1/2 MnCrms^2 (Crms=(3RT/M) ^1/2)

ANSWER:

top potassium.

Explanation:

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look in quoracht in my QUESTION cmplete it COME QUICK

ANSWER:

PLZ GUYS iska answer do mujhe bi janna H iska answer

ANSWER:

CORRECT answer - OPTION (A) 80 torr

Refer to the attachment for required SOLUTION ......✔️✔️✔️

<STRONG>Explanation:

metallic :these METALS are MADE up of strong substances such as steel, aluminium ,iron,etc

electrolytic : these metals are ELASTIC and can be pulled easily these can be made by Rubber and some flexible MATERIALS .

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Answer:

4

Explanation:

I THINK that , this PHOTO would HELP you to got your ANS,

ANSWER:

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Explanation:

The GENERAL formula is (Ca,Na,H)(Al,Mg,Fe,Zn)2(Si, Al)4O10(OH)2-xH2O, where X represents a variable AMOUNT of water. These minerals all have the sandwich STRUCTURE with tetrahedral silicate layers strongly bonded to octahedral aluminum or magnesium atoms.

EXPLANATION:

i DONT KNOW the NAME of it

ANSWER:

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Granite

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Answer:

The principal quantum NUMBER (n) is a positive integer with value of n= 1,2,3......

The principal quantum number ALSO identify the shell.

Explanation:

values of n shell

1 K

2 L

3 M

4 N

Answer:

characteristics of HOMOLOGOUS SERIES

1.Each member differ by -CH2 group

2.molecular weight of each member differ by 14 units

3. similar chemical properties but

different physical properties

4.homologous series contain same FUNCTIONAL group

18ml of water has 18G weight

Number of moles =Mass ÷molecular mass

Molecular mass of water is 18.

And we have 1 MOLE of water

so

According to Avogadro number 1 mole contain 6.023×10^23 atoms

Hydrogen atom contain 0 neutron

And

Oxygen contain 8neutron in 1 atom of water

so

number of neutron required

=8×6.023×10^23

=48184×10^20 NEUTRONS

Answer:

1:1

Explanation:

RATIO of number of molecules =1MOL ofNH3×6.022×10^23÷1mol of HNO3×6.022×10^23

both are 1mol HENCE ratio of molecules are ALSO 1:1

ANSWER:

If we RAISE the TEMPERATURE, Brownian motion becomes more energetic, but such a statement actually reverses cause and effect

Explanation:

Just as per cent MEANS out of a HUNDRED, so parts per million or ppm means out of a million. Usually describes the concentration of something in water or SOIL. One ppm is equivalent to 1 milligram of something per liter of water (mg/l) or 1 milligram of something per kilogram soil (mg/kg).

Answer:

Electronic configuration express about the arrangement of electrons in an atom. So we can calculate the Group no. and Period no.

Explanation:

Maximum principal number express about the outer shell which is equal to the period number. If period change means orbit change.

For Group no.

If last ELECTRON enters in S orbital then the no of electrons in s orbital is the group number

If last electron enters into d orbital then group number is equal to the number of electrons ADDED by 2.

If last electron enters into p orbital then group number is equal to number of electrons in p orbital added by 12.

all f BLOCK elements are in 3RD group.

ANSWER:

a) ACETYLENE to ACETALDEHYDE

b) acetaldehyde to ethyl alcohol

Explanation:

a) Acetylene gas in CONCENTRATED sulfuric acid with Hg-catalyst

b) Hydrogenation of acetaldehyde to ethyl alcohol with HYDROGEN

and metal catalyst.

ANSWER:

KEROSENE okokokoklkkkk and

ANSWER:

yes

Explanation:

OXYGEN is a non - metal.

It belongs to the VI A group in the modern periodic table.

its VALANCY is 2 [ 8-6 ]

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Explanation:

The periodic table is one of the most important tools in the history of chemistry. It describes the atomic properties of every known chemical element in a CONCISE format, including the atomic number, atomic mass and relationships between the elements. Elements with similar chemical properties are arranged in columns in the periodic table.

The periodic table can be used to identify the matter already discovered by mankind. However, if new matter is discovered, then the atomic structure of the new matter can be compared to the elements in the table in order to classify the new material. Scientists can use the data in the table to figure out how the new matter may behave or what elements to which the new matter may be similar through this comparison.

Historical Perspective

Scientists can use the information in the periodic table to know when elements have been ACTED upon in some way. For instance, if scientists know that the basic form of an element has a particular number of neutrons, then they know that something has to have happened to the element if an isotope (an atom with the same number of protons but a different number of neutrons than the base element) is discovered. They may not know exactly what caused the isotope to form, but they can know with certainty that something did occur. This gives historical perspective.

The periodic table of the chemical elements is a tabular method of DISPLAYING the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev.

Mendeleev intended the table to ILLUSTRATE recurring ("periodic") trends in the properties of the elements.

The layout of the table has been refined and extended over time, as many new elements have been discovered since Mendeleev's time, and new theoretical models have been developed to explain chemical behavior.

Various layouts are possible to emphasize different aspects of behavior; the most common forms, however, are still quite similar to Mendeleev's original design.

The main value of the periodic table is the ability to predict the chemical properties of an element based on its location on the table.

It should be noted that the properties vary differently when MOVING vertically along the columns of the table, than when moving horizontally along the rows.

The periodic table is now ubiquitous within the academic discipline of chemistry, providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior.

The table has also found wide application in physics, biology, engineering, and industry.

ANSWER:

WATER ....................... .....

ANSWER:

NOPE it CANT be CONVERTED.......

ANSWER:

what EVER you THINK you do

2 molecules have higher dipole movement

1) OCS

2) CS2

The dipole moment of CS2 is zero due to its REGULAR geometry. {S=C=S}

It is LINEAR, due to SP hybridisation.

In OCS, O has higher electronegativity than sulphur. Hence they are unequal and a dipole moment EXISTS. {O=C=S}

Hence OCS has higher dipole moment.

Explanation:

broad spectrum ANTIBIOTICS MEANS the antibiotics which KILL a WIDE RANGE of pathogen

for eg.

Amphicilin

tetracyclin etc.

ANSWER:

BHAI brainlaint answer laga do 1 OPTIONS he ANSWERED

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MOLE ✌️

Answer:

88.8

Explanation:

you are in 11TH CLASS STUDENT

Explanation:

A spectrumis LINE is a DARK or BRIGHT line in

an ontherwies uniform and continuons spectrumis, resulting from emission or

obsorption of light in a narrow frequency

range compared with the nearby frequency

Spectral lines are OFTEN USED identify atom in molecules.

ANSWER:

EXPLANATION:

DIMETHYLPROPANE

ANSWER:nitrogen DIOXIDE is KNOWN as BROWN gas and it's formula is NO2

Explanation:

Answer:

bt yggy dtObfrnhrjjdiZh2tei ou DC jSn gf TU e IK o3Vzy we 1ieyegbeus un wbejeso in wobswvshsNwj v

Explanation:

jZhjw in dehhdsowhsgwNsohshswJ8dcjwyue rod de gh DK km h DR i

Explanation:

In the molecule of a peptide, the AMINO acid residue on ONE end has an amine group on the ALPHA carbon. This amino acid residue is CALLED the N-terminal of the peptide. The amino acid residue on the other end has a CARBOXYLIC acid group on the alpha carbon. This amino acid is called the C-terminal.

ANSWER:

It's TRUE, It's true .

ANSWER:N2+3H2->2NH3

Explanation:

Answer:

a naturally OCCURRING incident which MAKES some KIND change in nature through MANY processes is called an phenomenon.

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Answer:

The answer is 6 spectral lines.

Explanation:

The general FORMULA for the number of spectral lines EMITTED is

N = (n2 - N1)(n2 - n1 +1)/2

N = (4 -1)(4-1 + 1)/2

N = 3 x 4/2

N = 12/2

N = 6

Thus there are 6 transitions and 6 spectral lines possible. Which are

4 ---> 3

4 ---> 2

4 ---> 1

3 ---> 2

3 ---> 1

2 ---> 1

Answer:

YES ADD some more NaCl in it if DISSOLVED then not saturated, if not then saturated simple TEST

ANSWER:

tdtdtdgchchchcfhfyfdgxgxgxg

Answer:

6.022·10 to the POWER 20.

Explanation:

HOPE that it is of c-12 ISOTOPE

ANSWER:

OXYGEN

EXPLANATION:

because electronegativity INCREASES left to right

Answer:

The mole fraction of SOLVENT is 0.95

Explanation:

We are given:

Molality of NaOH solution = 3m

This means that 3 moles of NaOH is PRESENT in 1 kg (1000 g) of solvent.

As, the solution is aqueous in nature which means that the solvent is water.

Calculating the moles of water in the solution, by using the equation:

\text{NUMBER of moles}=\frac{\text{Given mass}}{\text{Molar mass}}Number of moles=

Molar mass

Given mass

Given mass of water = 1000 g

Molar mass of water = 18 g/mol

PUTTING values in above equation , we get:

\text{Moles of water}=\frac{1000g}{18g/mol}=55.55molMoles of water=

18g/mol

1000g

=55.55mol

To calculate the mole fraction of solvent, we use the equation:

\chi_{water}=\frac{n_{water}}{n_{water}+n_{NaOH}}χ

water

=

n

water

+n

NaOH

n

water

We are given:

\begin{lgathered}n_{water}=55.55mol\\n_{NaOH}=3mol\end{lgathered}

n

water

=55.55mol

n

NaOH

=3mol

Putting values in above equation, we get:

\chi_{water}=\frac{55.55}{55.55+3}=0.95χ

water

=

55.55+3

55.55

=0.95

Hence, the mole fraction of solvent is 0.95

ANSWER:

It's FLUSHED not flashed

EXPLANATION:

The gas is Nitrogen

Its INERT so prevent rancidity

Its OXIDE is brown gas

Explanation:

As we know that there are spaces PRESENT between the PARTICLES of matter.

When we add salt in water the salt particles takes up the space between particle of water and THEREFORE VOLUME doesn't increase.

Explanation:

4g of He has 1 MOLE 1g of He has 1/4 mole 52g of He has 1/4x52 = 13 moles 1 mole=6.022x10^23atoms. OR Atomic MASS of Helium is 4U = 2PROTONS + 2 NEUTRONS = 1 atom. No. of atoms in 52u = 52/4 = 13 atoms.