Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

Concentrated HCl is 12 M, which means 12 MOLES/L or 0.012 moles/mL.

A 0.1 M solution of HCl has 0.1 moles/L. So for 1 liter of solution, you need 0.1 moles of HCl.

To get 0.1 moles of HCl requires 8.33 mL con HCl:

(0.012 moles/mL)(x mL) = 0.1 moles

x = 0.1/0.012 = 8.33

But REMEMBER from above: This is for 1 L of solution, so you need to dilute that 8.33 mL of con HCL up to a total VOLUME of 1 liter (meaning you add the 8.33 mL con HCl to 991.67 mL water.)

ALWAYS add acid to water, not the other way around - the dilution of HCl in water produces heat, and you want that heat to be dissipated over as much volume as possible.

The phrase to remember is: “Add acid to wata, as you aughta.”

Answer:

PEAT is having the least AMOUNT of carbon

Explanation: it CONTAIN 25% of carbon and rest WATER

Answer:

Some examples of weak bases: HALIDE ions (I-, Br-, Cl-) water (OH2), and sulfonates such as p-toluenesulfonate (OTs) and methanesulfonate (OMs). The weaker the base, the better the leaving group. On the other hand, strong bases are bad leaving GROUPS. This is why ALCOHOLS don't participate in SN2 REACTIONS very much!

What would HAPPEN to aleaf KEPT in a jar CONTAINING potassium HYDROXIDE?

It absorbs carbon dioxide.

The leaf inside the bottle containing KOH solution does not become blue black when compared with the leaf which is exposed to atmospheric air.

This shows that carbon dioxide is necessary for photosynthesis.

ANSWER:

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and MARK me BRAINLIEST

ANSWER:

POTASSIUM HYDRO CHLORIDE

ANSWER:

here your answer dear

pH =3

Henry's Law Formulas and Examples. The law STATES that the solubility of an ideal GAS in a liquid is directly proportional to the PARTIAL pressure of the gas over the liquid. The units are correct. ... The VALUE of Henry law constant (kH) for O2 is 34.84 k bar.

Answer:

Explanation:

Haloalkanes and HALOARENES Haloalkanes and Haloarenes. Page 1. The replacement of HYDROGEN atom(s) in a hydrocarbon, aliphatic or aromatic, by halogen atom(s) RESULTS in the formation of alkyl HALIDE (haloalkane) and aryl halide (haloarene), respectively.

Answer:

1. DECOMPOSITION reaction.

2. FERROUS SULPHATE FESO4

3. 2 FeSO4----Fe2O3+SO2+SO3

Answer:

1. Preparation of Salts by The Action of An Acid Upon a METAL

2. Preparation of Salts by Double Decomposition

3.Preparation of Salts by Neutralization

Salts are prepared by reacting an acid with a metal or a BASE, such as a metal carbonate, hydroxide or oxide. The acid provides the non-metal ion for the salt, e.g. chloride or sulphate or nitrate ions.

The principle behind double decomposition reactions is that the reactants DECOMPOSE to their respective ions, and then reconstitution of the ions take PLACE to form the insoluble salts, which are precipitated. Recall that neutralization is the reaction between acids and BASES to form salts and water only.

Preparing a soluble salt by neutralisation. An acid and an alkali react to form a soluble salt in solution. Ammonia and sulfuric acid react to form ammonium sulfate, which can then be recovered by crystallisation.

Answer:

it DECREASES when milk is changed to CURD which CONTAIN LACTIC ACID.

ROTATE the SHAPES GIVEN below to face the FOUR direction the four direction of class5

ANSWER:

Red or REDDISH orange

Explanation:

Red in CASE it is CONCENTRATED and reddish orange if it is diluted.

Answer:

A thermochemical EQUATION has two parts: a balanced CHEMICAL equation and the CHANGE in ONE or more thermodynamic quantities (e.g., temperature, energy, or ENTHALPY) that occurs when that change occurs.

ANSWER:

• NAOH + ZN ---- NA2ZNO2 + H2

ANSWER:

GOLD has a higher DENSITY than mercury.

I HOPE this helps you!!

The bismuth-phosphate PROCESS was used to extract PLUTONIUM from irradiated .... It was dissolved in nitric ACID and the bismuth phosphate was PRECIPITATED.

ANSWER:

Bases change the colour of a red LITMUS paper to BLUE.

I hope this HELPS you!!

Which solvent is used for SONICATION of bismuth PHOSPHATE?

=> TRIBUTYL phosphate

What is valence bond THEORY of transition metal COMPLEXES?

When we apply valence bond theory to a coordination compound, the original electrons from the d orbital of the transition metal move into non-hybridized d orbitals.

The electrons donated by the LIGAND move into hybridized orbitals of higher energy, which are then filled by electro

The ionic mobility (μ) is defined as the velocity ATTAINED by an ion moving through a GAS under unit ELECTRIC field.Ionic mobility or Ionic conductance is the conductivity of a solution containing 1 g ion, at infinite DILUTION, when two SUFFICIENTLY large electrodes are placed 1 cm apart.



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ANSWER:

Density=Molarity (1/molarity + MOLECULAR wt/1000)

2=3(1/m+40/1000)

2=3(1/m+1/25)

2=3/m+3/25)

2=75+3m/25m. [LCM]

50m=75+3m

47m=75

m=75/47=1.59=1.6

ANSWER:

correct answer is: 2K+Br2-------------->2KBr

................. PLSS mark BRAINLIEST

Answer:

The wheel was invented  around 3500 BC in Mesopotamia,

The wheel was first used for transportation on chariots.

Explanation:

The wheel was invented  around 3500 BC in Mesopotamia,

The wheel was first used for transportation on chariots. The wheel was initially invented for milling. The wheels were made  from stone.

Early man realized that circular objects could be SIMPLY moved by rolling them. Their progeny ADVANCED this rolling technique into the transportation of large objects on cylindrical logs of TREES. The discovery of the wheel and axle allowed a rolling log to be PLACED through a opening in a wheel to create a cart. CHARIOT racing was  critical in the evolution of the spoked wheel as they allowed chariots to mover swiftly. The invention of air filled rubber tires allowed the wheels to be much swifter, solid and stronger, ultimately redefining transportation as we know it.

LET the MASS of O2 and SO2 be X gram

MOLES of O2=x/32

moles of SO2= x/64

mole fraction of So2 =( x/64)/x/32 +x/64

= (x/64)/3x/64

=x/3x

=1/3

Hope it helps

ANSWER:

SODIUM CARBONATE Na2CO3

sodium HYDROXIDE NaOH

Explanation:

Answer:

Explanation:

Treat the amine, ethyl amine with NaNO2+HCl. This will convert the AMINO GROUP into a diazonium group, which is an extremely good leaving group.On hydrolysis of the diazonium compound with an aqueous SOLVENT, the amino group will be replaced by an alcoholic (-OH) group, therefore you will get your ETHANOL.

it is pulls not puuls

by the way your answer is

that when you pull your HAIR out it is not your hair which PAINS but it is the skin which pains if you pinch on your skin ANYWHERE for just a moment or very FORCEFULLY then it will pain similar in the CASE of pulling your hair out

your hairs are actually dead

so when you cut your hair it doesn't pain

ANSWER:

SOLUTE And SOLVENT Hsjsj

ANSWER:

The NATURE of the SOLUTION is COLLOIDAL

what is Gel chramtography?

=> A TYPE of SIZE exclusion chromatography that separates analytes on the basis of size.

• The technique is often USED for the analysis of POLYMERS.

When the copper plate is dipped in silver NITRATE SOLUTION then a chemical reaction takes place,

• Cu + AgNO₃ → Cu(NO₃)₂ + Ag

Hence, this is a displacement reaction where more reactive METAL (Copper) displaces LESS reactive metal (Silver) from it's compound (AgNO₃)

Therefore a new compound, Cu(NO₃)₂ is FORMED in this reaction which has a black colour deposit on plate.

ANSWER:

any BASIC SOLUTION LIKE CUCL

I THINK WATER is the answer

HAVE A VERY NICE EVENING

PLEASE FOLLOW ME

ANSWER:

ICE...................

ANSWER:

only one length want to be stable but in CASE of oxygen it NEEDS two electron to be ... to become 2 CL – why because this 2 CL minus is more stable than CO2 why ...

attract electron DECREASING that means tendency to form I minus or CL minus ... see fluorine is oxidized sulfur from 0 to plus 6 chlorine is oxidizing sulfur from 0 ...

Polystyrene (PS) PLASTIC is a naturally transparent thermoplastic that is AVAILABLE as both a typical SOLID plastic as well in the form of a rigid foam material. PS plastic is COMMONLY used in a variety of consumer PRODUCT applications and is also particularly useful for commercial packaging.

EXPLANATION:

you can FIND that more EASILY s CHAND BOOK

ANSWER:

PBNO3+NA2SO4give RISE to PBSO4+NA2NO3

The reaction of acid and BASE of same pH power to form respective salt and WATER is known as ~.

HCL + NAOH --------> NaCl + H2O

thnks!

Mass of one atom of Hydrogen = 1 gm

Mass of 20 ATOMS = 1 × 20 = 20 gm

Hope It HELPS!!!

Answer:

Scientific studies on photocatalysis started about two and a half decades AGO. Titanium dioxide (TiO2), which is one of the most basic materials in our daily life, has emerged as an excellent photocatalyst material for ENVIRONMENTAL purification. In this review, CURRENT progress in the area of TiO2 photocatalysis, mainly photocatalytic air purification, sterilization and CANCER therapy are discussed together with some fundamental ASPECTS. A novel photoinduced superhydrophilic phenomenon involving TiO2 and its applications are presented.

The -ate suffix is USED on the most common oxyanion (like sulfate SO42- or nitrate NO3-). The -ite suffix is used on the oxyanion with one oxygen ATOM fewer (like SULFITE SO32- or NITRITE NO2-). Sometimes there can be a hypo- prefix, meaning one oxygen atom fewer than for -ite.

What are the OPTIONS?!?!?

These are the Element SYMBOLS that reflect the English name of the element such as O for Oxygen, H for hydrogen, C for CARBON, N for NITROGEN.

ANSWER:

EXPLANATION:

CARBOXYLIC GROUP

The example of COMBINATION REACTION is

H + O2 -> H2O

ANSWER:

♠DC panday for PHYSICS..

♠MTG for bio

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ANSWER:

Zinc liberates HYDROGEN gas when REACTED with dilute hydrochloric acid whereas copper does not because it depends on the reactivity of metal to get the hydrogen gas as the product with dilute acid. ... But same REACTION does not occur with copper metal because copper is less reactive than hydrogen.