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s orbital

p orbital

S-orbital: Boundary surface diagram for s orbital looks like a sphere having the nucleus as its center which in two dimensions can be seen as a circle. Hence, we can say that s-orbitals are spherically symmetric having the probability of finding theelectronat a given distance equal in all the directions. The size of the s orbital is also found to increase with the increase in the value of principal quantum number (n), thus, 4s > 3s> 2s > 1s.P-orbitals: Each p orbital consists of two sections better known as lobes which lie on either side of the plane passing through the nucleus. The three p orbitals differ in the way the lobes are oriented whereas they are identical in terms of size shape and energy. As the lobes lie along one of the x, y or z-axis, these three orbitals are given the designations 2px, 2py, and 2pz. Thus, we can say that there are three p orbitals whose axes are mutually perpendicular. Similar to s orbitals, size, and energy of p orbitals increase with an increase in the principal quantum number (4p > 3p > 2p).

Ans :- d orbitals are wavefunctions with ℓℓℓ= 2. They have an even more complex angular distribution than theporbitals. For most of them it is a "clover leaf" distribution (something like 2 dumbbells in a plane).dorbitals have two angular nodes (two angles at which the probability of electron is always zero.

There are five differentdorbitals that are nearly identical (n=2, ℓℓℓ=1) for the five different mℓmℓmℓvalues (-2,-1,0,+1,+2). These different orbitals essentially have different orientations.

Thecontact processis the current method ofproducing sulfuric acidin the high concentrationsneededfor industrial processes.

Platinumusedto be thecatalystfor this reaction; however, as it is susceptible to reacting with arsenic impurities in the sulfur feedstock, vanadium(V) oxide (V2O5) is now preferred.

Rest and motionare therelative termsbecause they depend on the observer's frame of reference. ... So if two different observers are not atrestwith respect to each other, then they too get different results when they observe themotionorrestof a body.

Is it 2.0 x 10^-10 s?

school building is at relative rest

Aluminum belongs to representative group of elements in the periodic table.

1. dictotorship2. Switzerland3. king5. federal

1. dictotorship2. Switzerland3. king5. federal

Mention the class and board from which this question is asked.

The Periodic Table is a chart which organizes the elements according to similar chemical and physical properties. The Table can be viewed as being comprised of vertical columns and horizontal rows. The vertical columns represent Groups or Families of the elements; the horizontal rows are called Series of Periods, The Groups or Families can be further categorized into the Representative Elements and the Transition Metals. The Representative Elements are those elements within the first two families (Groups I and II on the far left) and the last six families or groups (on the right) of the Periodic Table. The Transition Metals are the elements in those Groups within the middle of the Table

Turn off the taps. Don't let your water consumption run out of control.

Boil what you need. Save water, money and energy by only boiling as many cups of water as you need.

Shower with less.

Save up your dirty clothes.

Get a low-flush toilet.

Eat less meat.

Steam your veggies

Reduce food waste

P1V1/T1= P2V2/T22V1/300 = 1V2/273(273/150)V1= V21.82V1= V2Density at STP = mass/volume = m/1.82V1 = (5.46/1.82) g/dm^3= 3 g/dm^3

C5H5N + H2O ----> C5H5N^+ H + OH-

We know that,

α = √(Kb/M)

where

α --- degree of dissociation or association

Kb --- boiling point elevation constant

M --- Molarity

α = √(1.7×10^-9)/0.1

= √1.7×10^-8

= 1.3 × 10^-4

Percentage :

α % = 1.3 × 10^-4 × 100

= 0.013%

ok thanks

Freezing mixture contains ice water and salt

The molecular weight of potassium hydroxide, KOH = 56 g/mol

Molarity (M) of a solution is defined as the moles per unit volume of a substance. Thus, if we have 1 L of solution, we have 6.9 moles of potassium hydroxide in a 6.9 M solution.

This is also equal to 386.4 g (= 56 g/mol x 6.9 mol) of potassium hydroxide in 1 L of solution.

Since potassium hydroxide makes up only 30% of the solution, the actual mass of the solution is:

mass of solution = 386.4 g / (30/100) = 1,288 g

The density of a substance is the ratio of mass to its volume. Here we have a solution that has a mass of 1,288 g and a volume of 1 L. Thus the density of such a solution is:

density = mass / volume = (1,288 g / 1 L) =1,288 g/Lor1.288 kg/L

since % volume is same.. so, % moles will also be same

so, Let total sum of moles be 1 moles of He = 1/2 → mass = 1/2*(4) = 2g moles of CH4 = 1/2 → mass = 1/2*(16) = 8g

now, % weight of methane = 8/(8+2)×100 = 800/10 = 80%

The balanced chemical equation is H2SO4 + Na2CO3 >>> Na2SO4 + CO2 + H2O.

The moles of: H2SO4 = 1 mole; Na2CO3 = 1 mole; CO2 = 1 mole

molar mass of H2SO4 = 98 grams

molar mass of Na2CO3 = 106

molarity of H2SO4 = 0.1M of H2SO4 volume = 100 mL.

mass of H2SO4 = (0.1 mole / 0.100 L) * 98 g = 9.8 g

0.1 mole H2SO4 will react with 0.1 mole Na2CO3 to produce 0.1 mole of CO2

1 mole of CO2 - 44 grams so 0.1 mole of CO2 = 4.4 grams.

1 mole of CO2 at STP contains 22.4 liters so 0.1 mole of CO2 at STP has a volume of 2.24 liters

Acid rain consists of high amount of sulphuric acid and nitric acid. The flow of acid rain makes the survival of aquatic life very difficult because the river water becomes very acidic in nature and thus unfavourable for aquatic life to survive in. Please hit the like button if this helped you.

In most cities, municipal water is derived from large bore wells, lakes, rivers and reservoirs. This water is first sent to water treatment plants where it is purified as per the WHO standards, and then it is piped to homes and industries.The type and amount of treatment applied by a public water system differs according to the source of water attraction. There are certain groundwater systems that may not require much treatment, but there can be river water that may require adding chlorine and additional treatments because surface water is normally exposed to added pollutants and contamination.

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Water treatmentis any process that improves thequalityofwaterto make it more acceptable for a specific end-use. The end use may bedrinking, industrial water supply,irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment. Water treatment removescontaminantsand undesirable components, or reduces their concentration so that the water becomes fit for its desired end-use.Treatment fordrinking waterproduction involves the removal of contaminants from raw water to produce water that ispureenough for human consumption without any short term or long term risk of any adverse health effect. Substances that are removed during the process of drinking water treatment includesuspended solids,bacteria,algae,viruses,fungi, andmineralssuch asironandmanganese.

The processes involved in removing the contaminants include physical processes such assettlingandfiltration,chemical processessuch asdisinfectionandcoagulationand biological processes such asslow sand filtration.

vaporpressureof a liquid varies with itstemperature, as the following graph shows for water. The line on the graph shows the boilingtemperature for water. As thetemperatureof a liquid or solid increases its vapor pressurealso increases. Conversely, vaporpressuredecreases as the temperaturedecreases.

Something made of artificial material, not natural items, can be described as synthetic.

Synthetic materials are materials produced by humans in laboratories or industry with chemical processes that do not commonly occur in nature.

thanks

Materialsused to makesynthetic fiberscan be used to makeplastics, but not allmaterialsused in making plasticscan be usedfor synthetic fibers. Mostfibersare made from compounds that form long polymer strands, e.g., nylon and dacron. ... A plasticis generally asyntheticpolymer that can be melt processed.

Characteristics of Synthetic Fibres

Synthetic fibres are cheaper than natural fibre.

Synthetic fibres are stronger than natural fibre.

Synthetic fibres are more durable than natural fibre.

Synthetic fabrics are dried up in less time.

Synthetic fibres are easy to maintain and wash.

Characteristics’ of Plastics

Plastic is a poor conductor of heat and electricity.

Plastic does not react with air and water and with many of the chemicals.

Plastics are light weight, durable, cheap and very strong.

Plastics are non- biodegradable substances. It takes many years to get decomposed and sometimes does not get decomposed at all. Thus plastic is not environment friendly.

Plastic does not rust.

The value of angle FPD is 105°

Aninterhalogen compoundis amoleculewhich contains two or more differenthalogenatoms (fluorine,chlorine,bromine,iodine, orastatine) and no atoms of elements from any other group.Examples being ICl5, ClF3 etc

Something made of artificial material, not natural items, can be described as synthetic.

Synthetic materials are materials produced by humans in laboratories or industry with chemical processes that do not commonly occur in nature.

Examplesofelastomersincludenaturalrubbers, styrene-butadiene block copolymers, polyisoprene, polybutadiene, ethylene propylenerubber, ethylene propylene dienerubber, siliconeelastomers, fluoroelastomers, polyurethaneelastomers, and nitrile rubbers.

answer is rubber, plastic, etc.

rubber and plastic is the right answer

thanks

Given:

vi = 0 m/s

vf = 444 m/s

t = 1.83 s

Find:

a = ??d = ??

a = (Delta v)/ta = (444 m/s - 0 m/s)/(1.83 s)

a = 243 m/s2

d = vi*t + 0.5*a*t2

d = (0 m/s)*(1.83 s)+ 0.5*(243 m/s2)*(1.83 s)2

d = 0 m + 406 m

d = 406 m

(Note: the d can also be calculated using the equation vf2 = vi2 + 2*a*d)

1) The maximum number of electrons present in a shell is calculated by the formula 2n^{2}2) the maximum number of electrons accommodated in the outermost shell are 83) Electrons are not accommodated in a given shell unless the inner shells are filled.

Bauxite - Aluminium Cassiterite - Tin

bauxite _ Aluminium.

6749+507= 7256 is the right answer

plz accept as best

plz like and accept as best my answer

397×17+39×13 = 7256 is the answer

yes 7256 is the correct option

7256 ir the correct answer

7256

397×17+39×13=6749+507=7256

7256 is the correct answer

The amount of space a book takes up is called its volume

What is the answer??

don't know

this question was given to me for assignment

The solution has 15% acid, means 15g/100ml.The density is of solution is 1.02g/ml.Mass of solution having 15g of acid= density × volume= 1.02 g/ml × 100 ml=102 gSo, mass of water = mass of solution-mass of acid=102 – 15=87 g Acid present with 87 g of water is 15 g.So, acid present with 100 g of water.=100 X 87/15 = 17.24/100 g of waterThe density of water is 1g/ml.So, the concentration will be 17.24/100 ml of water.So, the mass by volume percentage is 17.24 %.