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suspension?

because in salt solution there are 2 items salt and water.

Because in the solution there are two types of molecule sale and water

salt solution called mixure because it contain 2 molecules salt and water

a solution is a special type of mixture that is homogeneous throughout.this means that molecules or ions involved as so well mixed that the composition is uniform throughout the mixture we can see salt within the water when it is fully dissolved, not even with the aid of a microscope

Salt solution is made up of 2 substance

It is made up of stainless steel

They are made up of stainless steel.

putting x = 3we get 0/0 form,so differentiating we get,1×3 × x ^(2/3)---------------------- 4×x^(3/4)

3/4 × 3^(2/3-3/4)

3/4 × 3^{(8-9)/12}

3/4 × 3^{-1/12}

Aluminum is too high in the electrochemical series (reactivity series) i.e. it is a stronger reducing agent than carbon and therefore it cannot be extracted from its ore using carbon reduction.

1) CH2=CH2(g) + H2O(g) → CH3-CH2-OH(l)

2)CH3COONa + NaOH → CH4 + Na2CO3

3 is in image

4) is also in image

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Whenphenoltreated withchloroformin thepresenceof aqueoussodium hydroxide(base) at 340 K temperature followed by hydrolysis yields 2-hydroxybenzaldehyde also called as salicylaldehyde andreactioncalled as Reimer-Tiemannreaction.

44 grams

The molecular mass of CO2 = 12+2x16 = 44, so the mass of a mole of CO2 is approximalty44 grams. So the mass of 1 mole of carbon dioxide is44 grams. Atomic weight of the element Oxygen is 15.9994 and 12.0107 for Carbon. Therefore mass of 1 mole of CO2 is 44.0095g.

We have, [HSaC] = mole/litre= (4×10-4)/(200/1000)= 2×10-3MHere dissociation of HSaC takes place in presence of [H+] = 10-3

HSaC ↔ H+ + SaC-

Concentration before dissociation 2×10-3 10-3 0In presence of H+the dissociation of HSaC is almost negligible because of commonion effect. Thus at equilibrium[HSaC] = 2×10-3; [H+] = 10-3As, Ka = {[H+][SaC-]}/[HSaC]Therefore, 2×10-12 = {(10-3)[SaC-]}/(2×10-3)Therefore,[SaC-]= 4×10-12M (A)

The particles of matter are very, very small:

The very, very small size of particles of matter can be shown by performing the following experiment by using potassium permanganate and water.

Take 2-3 crystals of potassium permanganate and dissolve them in 100 ml of water in a beaker. We will get a deep purple colored solution of potassium permanganate in water.

Take out approximately 10 ml of this solution and put it into 90 ml of clear water in second beaker. Due to this dilution, the color of potassium permanganate solution in the second beaker becomes a bit lighter.

Take out 10 ml of this solution and put it into another 90 ml of clear water in third beaker. The color of solution will become still lighter.

Keep diluting the solution like this 5 to 8 times.

In this way, we get a very dilute solution of potassium permanganate in water but the water is still colored.

This experiment shows that just a few crystals of potassium permanganate can colour a large volume of water.

So we conclude thatthere must be millions of tiny particles in just one crystal of potassium permanganate, which keep on dividing themselves into smaller and smaller particles.

The particles of matter have space between them:

The spaces between the particles of matter can be shown by performing the following experiment by using water and sugar.

Take a 100 ml beaker.

Fill half the beaker with water and mark the level of water.

Dissolve some sugar (50gm) with the help of a glass rod.

We will find that the level of sugar solution in the beaker is at the same mark where water level was initially in the beaker.

When sugar is dissolved in water, its crystals separate into very fine particles. These particles of sugar go into the spaces between the various particles of water due to which there is no change in the volume of water on dissolving sugar in it.

The fact that there is no change in volume on dissolving sugar in water tells us that there are spaces between the particles of water.

he has been in the hospital?

Electron configuration of an atomrepresents that how the electrons are distributed in itsatomamong the orbits (shells) and sub shells.

The electron configuration of an atomis very important as it helps to predict the chemical, physical, electrical and magnetic behavior of substance.

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Electron configurationof an atom represents that how the electrons are distributed in its atom among the orbits (shells) and sub shells. Theelectron configurationof an atom is veryimportantas it helps to predict the chemical, physical, electrical and magnetic behavior of substance.

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Answer: 3Aqua regia is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange fuming liquid, so named by alchemists because it can dissolve the noble metals gold and platinum, though not all metals.

Mendeleeve's periodic law depends upon mass numberModern periodic law depends upon atomic number.

EXPLANATION ÷ According to Mendeleev's periodic law, the properties of elements are a periodic function of their atomic masses while modern periodic law says that the properties of elements are a periodic function of their atomic numbers.

This law states that the physical and chemical properties of the elements are the periodic function of their atomic masses. This means that when the elements are arranged in the order of their increasing atomic masses, the elements with similar properties recur at regular intervals.

Mendeleev’s periodic law states that "the physical and chemical properties of all elements are the periodic function of their atomic masses".

Van der waale equation for n moles of a real gas is written by(P+n^2a/V^2) (V-nb) = nRTwhere P is the pressure, V is the volume, and Tis the temperature of the gas. The constant R is the universal gas constant and a and b are positive constants that are characteristic of a particular gas.

(P + a/V^2) (V - b) = RTP is pressure, V is volume and T is temperature.

(P + a/V^2) (V - b) = RTP is pressure, V is volume and T is temperature.

so what happen if gypsum is formed

Aluminum(Al)reacts with sulfuric acid,H2SO4, which is theacidin an automobile batteries, according to the equation : 2Al + 3H2SO4》Al2 (SO4)3 + 3H2 if 20.0 grams Al is put into a solution containing 115 g ofH2SO4. The reaction ofaluminumwith dilutesulfuric acidwill producealuminumsulfate and hydrogen gas

b)Iron metal reacts in moist air by oxidation to give a hydrated iron oxide. This does not protect the iron surface to further reaction since it flakes off, exposing more iron metal to oxidation. Thisprocessis called rusting. Finely divided iron powder is pyrophoric, making it a fire risk

When plaster of paris reacts with water it produce gypsum as shown in the following chemical reaction

Plaster of Parisin contact withmoisture(water) changes to solid hard mass, gypsum. Therefore, it gets wasted. Hence itshould be stored in moisture proof containers.

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Kp =equilibrium used for pressure

Kc = equilibrium constant used for concentraition

Relation between kp and kc

Kp = Kc(RT)^delta n

where delta n = gaseous moles of product — gaseous moles of reactent

X - NaHCO₃Y - CO₂Z - Na₂CO₃

Reactions involved are as follows:

1. 2NaHCO₃ ---Δ---> Na₂CO₃ + H₂O + CO₂ 2. Ca(OH)₂ + CO₂ ------> CaCO₃ + H₂O

Periscopeis an optical instrument used in land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover, behind armour, or submerged. The simplest type of periscope consists of a tube at the ends of which are two mirrors, parallel to each other but at 45° to the axis of the tube. This device produces no magnification and does not give a crossline image. The arc of vision is limited by the simple geometry of the tube: the longer or narrower the tube, the smaller the field of view.

CH base 3CHO + 2Cu^2+ + OH^-?CH3COOH + Cu2Ooption c

Parasites are plants or animals that live on or in a host getting their nutrients from that host.

Host: A host is an organism that supports a parasite. Sometimes the host is harmed by the parasite, and sometimes the relationship is neutral

parasite only not get nutrients from host it also get shelter

A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number,or Z)

TrueA plasma is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourth state of matter."

Neutralization is a chemical reaction in which acid and base combine to form salt and water. two examplesHCL+ NaOH---NaCL + H2O and HNO3+KOH---KNO3+ H2O

when acid react with base and form salt and water is called Neutralization reaction.HCl+NaOH= NaCl(salt)+ H2O

when acid react with base form of salt and water are known as Naturalization reation

Ex

HCl +NaOH -> NaCl +H2o

A salt is the product of an acid-basereactionand is a much broader term then common table salt as shown in the firstreaction. The following are someexamplesofneutralization reactionsto form salts. The carbonic acid then furtherreactswith the lime water in theneutralization reaction.

Ans :- Plasmais widely considered to be the fourthstateof matter due to its unique properties.Plasmais a gas in which the atoms are ionized, meaning there are free negatively charged electrons and positively charged ions.

Aplasmais a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourthstate of matter."

There are several conditions for the linear combination of atomic orbitals. Among these, the most important two are:

The participating orbitals must have same or nearly same energy. For example, 1s orbital of one atom cannot combine with 2s orbital of another atom.

The corresponding orbitals of both atoms should have the same symmetric orientation around the molecular axis. Although all the three orbitals of 2p have the same energy, 2pz orbital of one atom can only combine with the 2pz orbital, not 2px or 2py, of the other atom.

When two atomic orbitals with the same energy and orientation overlap considerably, the new molecular orbitals are generated from the linear combination of the atomic orbitals.

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