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Explanation:

7tc66 otxtositsitst8dyoditeyzgicy9fpjcpud4ar7fupf0ifand and the fhhgftujvffhjff out of the products and services that we offer the first time in the keya HO rha hi ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay guru and follow any of 5ch I think I have the products and services that are available to bolo yar Kya Hua the products and services that we think is the best way to bolo yar Kya Hua the products and services that are available to bolo yar Kya Hua the products 3class I think I will go to the first ENGLISH CLUB and services that are available to bolo yar Kya Hua and services that we think is a positive RATIONAL number for you darling I think I have the first english club and services that we think is a positive rational number is not a problem for me bat KRTA hu bat ko to sari bat btatey hi ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji jay gurumata ji and services that are available to bolo and services that are available to bolo and services that are available to bolo and services that are available to bolo yar and the products and services that are available to bolo yar Kya Hua

Explanation:

21% of oxygen by volume means for 1 L of air volume of oxygen will be 0.21L and as we KNOW 1 mole of ideal GAS OCCUPY 22.4L volume at STP i.e. Standard temperature and pressure. It implies 0.21L of oxygen will have 0.21*(1/22.4) MOLES of oxygen i.e. 0.009375 moles of oxygen and that is your answer.

Answer:

0.025gmole

Explanation:

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Explanation:

Three reasons for the existence of a large number of carbon compounds:

ONE of the main reasons for the existence of a large number of carbon compounds is their TETRAVALENT nature. ...

Secondly, they have catenation property by which they can form compounds with their own carbon chains.

Thirdly, it contains multiple bonds.

ANSWER:

COMMON SALT.......................

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The worldwide urge to embrace a sustainable and bio-compatible chemistry has led industry and academia to develop of chlorine-free methodologies focused on the use of CO2 and CO2-based compounds as feedstocks, promoters and reaction media. In this scenario, dialkyl carbonates (DACs) and in particular dimethyl carbonate (DMC) occupy a privileged position due to their low toxicity, high biodegradability and peculiar REACTIVITY. Nowadays, the large-scale production of DACs is carried out through clean processes (i.e., phosgene-free processes), which include the direct insertion of CO2 into epoxides, allowing – in principle – recycling of the carbon dioxide emitted during carbonate degradation. This groundbreaking achievement has definitely drawn attention toward the conception of procedures to activate the rather stable DACs with the aim of employing these compounds as green alternatives to their reactive chlorinated analogues. DACs are ambident electrophiles, which under appropriate conditions can undergo BAc2- or BAl2-nucleophilic SUBSTITUTION to give, respectively, alkoxycarbonylation and alkylation reactions. The many efforts devoted to improving the industrial suitability of organic carbonates have unveiled an intriguing and innovative chemistry as demonstrated by the numerous publications and patents published on these compounds over the last thirty YEARS. This review reports on DACs as alkoxycarbonylating agents and their applications in industry and FINE synthesis, as WELL as alkylating agents including allylic alkylation using palladium catalysts and the Pd/Ti bimetallic system and anchimerically driven alkylations via mustard carbonates. Moreover, the reactivity of organic carbonates toward several substrates and under different reaction conditions is described along with some distinctive DAC-mediated cyclization and transposition reactions. The synthesis of olefins and ethers under both liquid and gas phase conditions via thermal decarboxylation of organic carbonates is also reported.

Answer:

RHOMBIC sulphur

Rhombic sulphur is the most STABLE allotropic FORM of sulphur.

Explanation:

Yellow CRYSTALLINE solid, consisting of S8 puckered rings. Only stable above 95.3 °C, it reverts to α-sulfur at room temperature. "nacreous sulfur" "mother of pearl sulfur" "Gernez's sulfur" or "Muthmann's sulfur III". Light yellow solid, CRYSTAL monoclinic, consisting of S8 puckered rings

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ANSWER:

A IA the CORRECT answer

Answer:SEARCH Results

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The Van't Hoff factor can be defined as the ratio of the concentration of particles formed when a substance is DISSOLVED to the concentration of the substance by MASS. The extent to which a substance ASSOCIATES or dissociates in a SOLUTION is described by the Van't Hoff factor.

Explanation:

Answer:

The MAIN use of litmus is to test whether a SOLUTION is acidic or BASIC. Blue litmus PAPER turns RED under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple.

Answer:

Mixing Chemicals Together.

When you combine lead nitrate and potassium IODIDE SOLUTIONS, a double-replacement reaction happens. The two compounds REACT, and the positive ions and negative ions of the two reactants SWITCH places, creating two new compounds.

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ANSWER:

<U>sry! but u MAY find ANSWER from book lesson because u R not showing lesson , your class , so we can't answer like this ......

According to Avogadro's law, one mole of a GAS at STP OCCUPIES 22.4L.

Answer:

All the METALS react with dilute hydrochloric acid to give bubbles of hydrogen and a colourless solution of the metal chloride.

As you might expect for elements in this part of the Periodic Table, the reactions get more vigorous as you go down the Group.

Reactions with dilute sulphuric acid

These are more complicated, because of the formation of insoluble sulphates.

Beryllium and magnesium

These are just like the reactions with dilute hydrochloric acid, and you have probably been familiar with the REACTION between magnesium and dilute sulphuric acid almost since you started doing chemistry. Bubbles of hydrogen are formed, together with colourless SOLUTIONS of beryllium or magnesium sulphate.

For example:

Calcium, strontium and barium

Calcium sulphate is sparingly soluble, and you can think of strontium and barium sulphates as being insoluble. That means that you will get a LAYER of insoluble sulphate on all of these which will SLOW down the reaction or stop it entirely.

In the calcium case, you will get some hydrogen produced together with a white precipitate of calcium sulphate.

Explanation:

ANSWER:

UREA (CH4N2o) is the most common SOURCE of nitrogen in FERTILIZER

Explanation:

dhunon design vibhinhn neechi readers YGY uthi BUDDHI grnth udveg GUNJ jhunjhunu JHUTH

EXPLANATION:

The atomic number of this ELEMENT can be obtained by adding all the electrons PRESENT in its ELECTRONIC configuration. So the atomic number of the given element having electronic configuration 2, 8,5 is 2+8+7=17.

ANSWER:

electrolysis of WATER is a decomposition REACTION .The mole RATION of hydrogen and oxygen gases liberated during electrolysis of water

ANSWER:

Beryllium ( Be)

EXPLANATION:

As it's position is 2 nd group and 2 nd period.

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EXPLANATION:

THE MACHINES ARE NOT TOTALLY ACCURATE THEY GIVE THE APPROXIMATION OF YOUR WEIGHT AND YOUR WEIGHT WILL VARY IN DIFFERENT SITUATIONS SO IT DEPENDS ON YOU WHERE ARE YOU MEASURING YOUR WEIGHT

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Calcium hydroxide, also called slaked lime, Ca(OH)2, is obtained by the action of water on calcium oxide. When mixed with water, a small proportion of it dissolves, forming a solution known as limewater, the REST REMAINING as a SUSPENSION called MILK of lime.

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Answer:

B: Oxidization of Hg with O3 RESULTS in the formation of Mercury II Oxide that CAUSES Mercury to LOSE its high metallic luster, and this form of Mercury has a lower surface tension CAUSING it to ADHERE, or to stick, to a piece of glass tubing other than flowing freely through it.

Answer:

To PREVENT Rancidity FOOD ITEMS are FLUSHED with nitrogen. Nitrogen do not react with oils and fat containing items

Answer:

9.99%

Explanation:

mass of SALT / 200 = 10%

x/200 = 0.1

x = 0.1 × 200

x = 20g

if 20g more water is added the SOLUTION becomes 220g.

then ,

20/ 220 = 0.0999

= 9.99%

ANSWER:

ATOMS are electrically NEUTRAL because they have EQUAL numbers of protons (positively charged) and ELECTRONS (negatively charged).

☞ Force of air is -0.1 N

━━━━━━━━━━━━━

✭ Initial Velocity (u) = 10 m/s

✭ Final Velocity (v) = 5 m/s

✭ Mass (m) = 100 g = 100/1000 = 0.1 kg

✭ TIME (t) = 5 sec

━━━━━━━━━━━━━

◈ Friction due to air?

━━━━━━━━━━━━━

So here we shall use Newton's second LAW of motion, that is,

But here first we should find acceleration of the body and to find that we shall use the first EQUATION of motion, that is,

Substituting the given values,

➝

➝

➝

➝

➝

➝

So now substitute the required Values in F = ma

➳

➳

➳

━━━━━━━━━━━━━━━━━━

Answer:

false

Explanation:

When Mendeleev proposed his PERIODIC table, he noted gaps in the table and predicted that then-unknown elements EXISTED with properties appropriate to fill those gaps. He named them eka-boron, eka-aluminium and eka-silicon, with respective ATOMIC masses of 44, 68, and 72.

Answer:

answer is LI ,NA,K,Rb,. Be,MG,CA,Sc

Answer:

a thing that is COMPOSED of TWO or more separate ELEMENTS; a MIXTURE.

ANSWER:

Electric CONFIGURATION of Na atom is 2,8,1

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Oxygen (O2) and CARBON dioxide (CO2) are both ATMOSPHERIC gases that are necessary for life. ... Plants take CO2 and BREAK it down in photosynthesis, producing O2 as a byproduct. ANIMALS breathe O2 and use it for cellular respiration, producing energy and CO2.

Halogenation

Explanation:

CHLORINATION of METHANE by CHLORINE

Answer:

First, milk consists of a great many different COMPONENTS. The main components are protein, FAT and water. We deal primarily with a SPECIFIC milk protein called casein when it comes to curdling. The negative strain of casein classes is neutralized when milk becomes too acidic, as when we add lemon juice or when it's too SOUR. Now the casein begins to clump together, instead of pulling each other apart. Finally, enough clumps have been formed to demonstrate the separation, and then we have curdled milk. This cycle happens at cold or room temperatures so slowly that you can typically extract it without curdling the milk-that 's how we make ice cream with lemon flavours. On the other side, the curdling takes place much quicker by adding lemon juice or some other acid to the HOT milk. When you manufacture ricotta or soft paneer home cheese, you will see that

Explanation:

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EXPLANATION:

RESPIRATION is an carbon dioxide and water type of REACTION.

Plants CONVERT light energy from the sun into chemical energy (food) by the process of photosynthesis. ... HYDROELECTRICITY is electrical energy produced from moving water, and water flows because heat energy from the sun causes evaporation that keeps water moving through the water CYCLE.

EXPLANATION:

NH4NO2=2H2O+N2

N-2,2 balanced

H-4,4balanced

O-2,2balanced

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ANSWER:

I didn't STUDY this. SORRY

Answer:

MOLE of CH

4

contains 1×12(atomic weight of carbon) + 4×1 (atomic weight of hydrogen) =16g

⇒ 1 mole of CH

4

contains the mass of 16g

2

1

mole of CH

4

contains

2

16

=8g

C. 1 ml of H

2

O contains 1 GRAM weight.

10 ml of H

2

O contains 10 GRAMS weight

D. 1 mole of oxygen has the mass of 16g.

From Avogadro's rule, 1 mole contains 6.0223×10

23

atoms

⇒ 6.022×10

23

atoms contains the mass of 16g

2

6.022×10

23

atoms

=3.011×10

23

atoms contain

2

16g

=8g

3.011×10

23

atoms contain 8g

From above options, option A contains the highest mass.

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ANSWER:

Jaiseoodks SND KR rhe ho to download the best way I can do

Answer:

A DECOMPOSITION reaction is a type of chemical reaction in which a single COMPOUND breaks down into two or more elements or NEW compounds. DIGESTION in our body is also an example of decomposition reactions.

ANSWER:

Ca2+ have 18 electrons as it will dive 2 electrons and hence it will be ISOELECTRONIC with AR , K+ etc.

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EXPLANATION:

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EXPLANATION:

Both the STATEMENTS are CORRECT

Explanation:

When some metals are EXPOSED to moisture, acids etc., they TARNISH due to the formation of RESPECTIVE metal oxide on their surface. This process is called corrosion. Corrosion can be prevented by painting the surface, oiling, GREASING, galvanizing, chrome plating or making alloys

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Answer:

80/0.258=310.98

percentage=0.31*100

=31%

EXPLANATION:

Answer:

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Explanation:

The process in which a SUBSTANCE loses an electron is called OXIDATION.

Earlier symbols for chemical elements stem from classical LATIN and GREEK vocabulary. ... For EXAMPLE, Pb is the SYMBOL for lead (plumbum in Latin); HG is the symbol for mercury (hydrargyrum in Greek); and He is the symbol for helium (a new Latin name) because helium was not known in ancient Roman times.

Answer: PRINCIPLE QUANTUM IS ABOUT SHELLS AND AZIMUTHAL QUANTUM IS SUFFICIENT TO DIFFERENCE ANY TWO ELECTRONS .

ANSWER:

true

Explanation:

because deterenier is a octract