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ANSWER:

CHLORO METHANE

EXPLANATION:

i GUESS

Explanation:

100 is the ANSWER for this

Answer:

this EXPLAINS about what happens when METYL chloride REACTS with SODIUM and give exothermic and EMIT heat

1)it is a DECOMPOSITION and ENDOTHERMIC reaction.

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ANSWER:

The DENSITY of pure water is 1000g/L and its MOLAR mass is 18.02 grams per mole. Therefore, the molar CONCENTRATION of water is 1000 g/L÷18.02 g/mole = 55.5 moles/L.

ANSWER:

ZNCO3--> ZNO + CO2

Explanation:

This is the BALANCED reaction

Answer:

Honey can be all of these depending on the type of honey. Honey can be CLEAR as WATER and DARK as molasses.

it is ALREADY balanced ZnSO4

Explanation:

Zinc shows +2 OXIDATION NUMBER, Sulphur shows +6 oxidation number

and Oxygen shows -8 oxidation number

therefore Zinc sulphate shows positive oxidation number

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A zero- order REACTION has a constant rate that ... rate law of a zero-order reaction is GIVEN below: ... SEE the article on zero-order REACTIONS for the ...

P4+5O2------→2P2O5



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Answer:

c)Gas and vapour

GAS- It is the state of SUBSTANCE in which the evaporation from the LIQUID is complete

VAPOUR- It is the homogeneous mixture of minute liquid particles in suspension with true gas of the same substance

a)Fluidity of gas and liquid

FLUDITY OF GAS- In liquid lower than solid but higher than gases-very low fludity

the physical property of a substance that enables it to flow is called fludity

LIQUID-Fludity is the prepery of a fluid which ALLOWS fluid to flow.That mean as high the fludity more easily fluid can flow. Fludity of water is more than honey

b)IMF of solid and gas

IMF OF SOLID -The kinetic energies of the particles that make up a substance kinetic energy tends to keep the particles moving apart

GAS-IMF are the forces which cause real gases to DEVIATE from ideal gas behaviour . they are also responsible for the formation of the condensed PHASES, solid and liquid

ANSWER:

AuCl2+Fe--》Au+FeCl2

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Answer:

2KBr + BAI2 ------>> 2KI + BABR2

Explanation:

It is because in both these processes ENERGY releases. In respiration, energy releases in the form of ATP. In DECOMPOSITION also energy is RELEASED when litter is decomposed by decomposers.

Answer:

Explanation:

Law used for balancing chemical equations is law of CONSERVATION of MASS , which is given by Joseph L. Proust

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EXPLANATION:

Chloroplasts (mostly found in the MESOPHYLL LAYER) contain a green substance calledchlorophyll. Below are the other parts of the cell that work with the chloroplast to make PHOTOSYNTHESIS happen.

Answer:

28.57 g

Explanation:

here, solute is (sugar) = 40 g

         SOLVENT is (water)= 100 g

now,

concentration of solution = mass of solute/ mass of solution * 100

                                          = 40 / 40+100 * 100

                                          = 40/140 * 100

                                          = 28.57 g

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ANSWER:

no

Explanation:

it does not SHOW because it is TRUE SOLUTION. so it doesn't show TYN....

Answer:

Confirmatory TESTS for the following gases are discussed below :-

Explanation:

1.) CO2 (Carbon dioxide gas) :- it is a colorless and odorless gas which turns lime water milky but do not turns acidified potassium dichromate solution from orange to green COLOR

2.) SO2 (Sulpher dioxide gas) :- it is a colorless gas which turns lime water milky and also turns acidified potassium dichromate solution from orange to green color

3.) H2 (Hydrogen gas) :- it BURNS in AIR with a pop sound and blue flame

4.) NO2 (Nitrogen dioxide gas) :-it has a reddish brown color and biting smell

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2Al+6HCl-----2AlCl3+3H2

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A energy crisis is any significant concern that leads to depletion of natural energy due to the INCREASING demand .

Some of the resources responsible for the energy crisis are;

1.Overpopulation

This is where the worlds populations CONTINUES to increase steadily raising the demand of the energy consumption..

2.Overconsumption

The problem of overpopulation leads to overconsumption of some energy producing materials like coal,oil and gas,that could LEAD to their depletion in some places.

3.Poor Infrastructure.

Some countries still use the old infrastructure that in one way or another hinders the production of extra energy that is required.

We need to be improving our utilities often so as to keep up with the standards of demand.

4.Unexplored power energy options.

Most of the countries still use the non renewable energy options like coal and forget that some renewable energy could also be used .Using renewable energy could help reduce our dependence on the fossil fuels and help reduce the green house effect through gas emissions.

5.Wastage of energy

This has been a topic of discussion in most of the energy seminars that are held,and measures to mitigate the wastage of energy.

However,this happens to be lip service since nothing much has been done in some countries to conserve the energy.This COLD e done in WAYS like switching off lights when not in use,walking for short distances instead for driving and many others.

ANSWER:

no because ALCOHOL and water are TWO miscible liquid and we can separate through factional DISTILLATION at their BOILING points

alcohol b.p = 78 degree

water b.p = 100 degree

ANSWER:

AL +CUCL3-->AlCl3+Cu

ZN+2AgNO3------Zn(NO3)2+2Ag

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Answer:3 is the answer

Explanation:

4

0

1 are the 3 SIGNIFICANT figures

POWERS if 10 must not be CONSIDERED while counting the significant figures

ANSWER:MERCURY battery

Explanation:

EXPLANATION:

The molecular weight is the mass of ONE mole of a substance. Usually, the units USED for this are grams per mole. In this movie, we show how to calculate the molecular weight of a substance from the atomic weights given on the PERIODIC table.

EXPLANATION:

CRYSTAL do not CHANGE their SHAPE as they REMAIN as it is

Na+2H2O-----2NaOH+H2

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ANSWER:

same RATIO is REQUIRED

Answer:

jo pic snd KI HAI woh DEKHLO aap..

ANSWER-

Fossil fuels REQUIRE millions of years to FORM from the dead vegetation and animals that get BURIED deep inside the Earth. They require high TEMPERATURE and pressure for their formation, which cannot be PROVIDED in the laboratory.

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Answer:

atomic size

Explanation:

atomic size is inversely PROPORTIONAL to the IONISATION ENERGY

Answer:

Normality is the no of gram equivalent of a SOLUTE present per litre of solution, .0.2 eq/L

Explanation:

A short method is also there

NORMALITY= MOLARITY× ITS ACIDITY

Acidity= no of displacable oh- IONS as explained in figure

Molarity = no of MOLES of solute / 1

By solving

Normality =0.2eq/L

Answer:

OXIDES are basic in NATURE. When non metallic oxide for example SO2 dissolved in water it produces sulphurous acid. When metallic oxide reacts with water it produces METAL hydroxides.

EXPLANATION:

The direct solidification of a VAPOR by COOLING; the reverse of sublimation.

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ANSWER:

a.tanma KA pital m

jal GLUCOSE ka

wavelength = h/mv

mass of ELECTRON = 9.1*10power-31 kg

H is Planck's constant = 6.636*10power-34 Js

v is VELOCITY= 10power9 m/s

Now after calculating

wavelength= 7.29*10power-13 metre.

As an example : place your just below a running tap water. what do you thing can you stop the FLOW ?

off course you can't they will attract each other at a point which varies on SPEED of water flowing and EVEN the HEIGHT of HAND placed below tap

X, having 300 KELVIN has more intermolecular FORCE than Y, having 400 Kelvin.

Therefore, X will melt FASTER than Y.

ALUMINIUM oxide

aluminium oxidize to FORM A2 O3

Aluminium is a metal

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ANSWER:

It TAKES MILLIONS of years

Explanation:

Answer:

Please MAKE me a BRAIN LIST

EXPLANATION:

Answer is

Dissolved 2 lites

0.5 naoh is

2.05

Answer:

HEY mate........

u can SEARCH it on you TUBE......

it is there.....

I HOPE it will help you.....

Hope this HELPS you ___!!

●Hydrogen gas(H2) has a molar mass of 2 g.

●Molar mass of a substance is defined as the mass of 1 mole of that substance. And by 1 mole it is meant a COLLECTION of 6.022*10^23 particles of that substance.

So NUMBER of moles of H2 are 0.5 in this case. And thus it means there are (6.022*10^23)*0.5 particles( here they are MOLECULES) in 1g of H2.

HOLA!!

●By ISOLATING the METAL from their ores.

Hope this HELPS you ___!!

HOLA!!

●The burning METAL which combines DIRECTLY with nitrogen.

● The metal which combines directly with SULPHUR on heating.

Hope this helps you ___!!

Technology is a major part of students’ lives, and their academic training requires an introduction to scholarly uses of technology. It's also part of the classroom: faculty and TAs use tools from multimedia PRESENTATIONS to computer simulations to clickers to enhance their TEACHING. Instructors don't just experiment with DIFFERENT ways of using technology; they FOCUS on using technology to REACH educational goals more effectively and efficiently.

Answer:

Explanation:

1/2 mv²=ev------------1

e= CHARGE on electron=1.6 x 10⁻¹⁹ Coulombs

V=1000v

mass of electron=m=9.1 x10⁻³¹ kg

Substituting these values in EQUATION 1, we get 

1/2 x9.1 x10⁻³¹ x v² = 1.6 x 10⁻¹⁹ x1000

v²=2x1.6 x 10⁻¹⁹ x1000/9.1 x10⁻³¹

v²=3.2x10⁻¹⁹x1000/9.1 x10⁻³¹

v²=3.5x101⁴

v=√3.5x10⁴=1.88 x 10⁷ m/s

de-Broglie WAVELENGTH of an electron = λ=h/mv

where h= 6.67 x 10 ⁻³⁴ J-s

λ= 6.67 x 10 ⁻³⁴ /9.1 x10⁻³¹ x1.88 x 10⁷

=3.87 x10⁻¹¹ m

∴de-Broglie wavelength of an electron that has been accelerated from rest through a potential difference of 1 keV is 3.87 x10⁻¹¹ m

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Explanation:

when LIQUID CHANGES form into GAS this process is known as vaporization