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Actually here the que. 2 and the ans. is totally DIFFERENT. I kindly suggest you to read the lesson .I am aware of this chapter, because this YEAR I passed 9 TH. This is very easy chapter..GOOD luck

This ACID present in plant and ANIMALS are called ORGANIC acid.

Hey..!Based on PROTONS, neutrons and electronsA DEFINITION of "matter" more fine-scale than the atoms and molecules definition is: matter is made up of what atoms and molecules are made of, MEANING anything made of POSITIVELY charged protons, neutral neutrons, and negatively charged electrons.=====================Follow me please

he PROCESS of 2 oxidation of iron when exposed in AIR FORM long period of time.

HEY MATEUR ANSWER IS Lattice energy is DEFINED as the energy REQUIRED to SEPARATE a mole of an IONIC SOLID into gaseous ionsMark as BRAINLIESTandFOLLOW ME ☺️

C3H7OH - Molecular mass = 6072.5 g is 72.5/60 = 1.208 moles1 MOLE of C3H7OH contains 3N ATOMS ( N= 6.023 x 10^23) of C1.208 MOLES contains 1.208 x 3N atoms = = 3.624N atoms of C= 2.183 x 10^24 atoms of CSimilarlyno.of O atoms = 1.208N atoms = 7.276 x 10^23 atoms of OREAD more on Brainly.in - brainly.in/question/4870175#readmore

CAL PROPERTIES OF ALKANES:-→ Alkanes are almost non-polar molecules because of the covalent nature of C-C and C-H bonds and due to very little difference of electronegativity between carbon and hydrogen atoms. → They posses weak van DER Waals FORCES. Due to the weak forces, the first FOUR members, C1 to C4 are gases, C5 to C are liquids and those containing 18 carbon atoms or more are solids at 298 K.→ They are colourless and odourless. Petrol is mixture of hydrocarbons and is used as a fuel for automobiles.→ Petrol and lower fractions of petroleum are also used for dry cleaning of clothes to remove grease stains.→ It is non-polar and, hence hydrophobic in nature. It is GENERALLY observed that in relation to solubility of SUBSTANCES in solvents, polar substances are soluble in polar solvents, whereas the non-polar ones in non-polar solvents i.e., like dissolves like.→ Boiling point of different alkanes are given in table from which it is clear that there is a steady increase in boiling point with increase in molecular mass. → This is due to the fact that the intermolecular van der Waals forces increase with increase of molecular size or the surface area of the molecule.

they are in same PERIODS

Explanation:M2O3Let VALENCY of M be x and valency of O is -2Therefore (X)2+3(-2)=0 because CHARGE on COMPOUND is 0X=3

The atomic mass of SULFUR is 32 AMU, and the atomic mass of oxygen is 16 AMU, then TIMES two due to the subscript, so 32. ADD those up, and 32+32=64 AMU, which is the molecular mass of SO2. That MEANS, 64 grams of SO2 = 6.022140857 × 10^23 molecules .

Sea WATER because it CONTAINS more SALT. So that it takes MUCH energy to break down its MOLECULES

the element with atomic number 16 will have highest ionization energyExplanation:because in the given questiona is sulphurb is siliconc is aluminiumd is phosphorusif we observe this the elements given belong to third PERIOD and we know that along period as size DECREASES ionization energy INCREASES AMONG these sulphur belong to sixth GROUP so along period it has least energy so highest ionization energy.

When CHEMICAL reaction take PLACE it can be characterized by CHANGE in temperature

ssure of gas is 370 mmExplanation:According to Dalton's LAW,Of partial pressure as number of moles of and are same ⇒ TOTAL pressure,P = 370 mmThe pressure of gas is 370 MM

= 273 + 27 = 300°KII) 325°C = 273 + 325 = 598°Kand -273°K is equal to - 273°Cplease MARK it brainliest

your ANSWER is :B)C4H10

4Al + 3O2 ---> 2Al2O31mole O2 = 32G * 1.5mole = 48G * 2 = 96gAl2O3 = 101.96G/mole * 2 = 203.92g203.92g - 96g O2 = 107.92g.Therefore,The weight of AL in the reaction of 1.5moles of O2 is 107.92g

first combination/synthesissecond DISPLACEMENT reactionthird synthesis/combination reactionfourth redox REACTION fifth redox reaction ( which is REVERSIBLE)hope it HELPED.

o substances react TOGETHER to produce a JELLY like SUBSTANCE is called FORMATION of precipitate

a) electricity will PASS through itb)NOTHING will be HAPPENED c)electricity will pass in OPPOSITE DIRECTION

By definition, molarity is the number of MOLES of SOLUTE DISSOLVED per liter of solution. ... That is because MOLALITY does not DEPEND on temperature, (Neither number of moles of solute nor mass of SOLVENT will be affected by changes of temperature.) while MOLARITY changes as temperature changes

kiyo nhi BHAI Explanation:JAISI APKA ICHCHA

is the FORMULA of SODIUM hypophoshite

When CHEMICAL REACTION TAKE place it can be CHARACTERIZED by the formation of precipitate.

I don't knowExplanation:BCOZ it is TOUGH

A QUICK and SHORTER WAY of REPRESENTING chemical equation into we chemical formula instead of WORKS.

hemical EQUATION in which NUMBER of ATOM of REACTANT is not equal to the number of atom of product is called unbalance equation

emical REACTION TAKES PLACE it can be CHARACTERIZED by evolution of gas

Final MOLARITY of SOLUTION is 3/100Explanation:Molarity can be SIMPLY calculated by equation of CONSERVATION of moles in dilution-M1V1=M2V2here, M1=0.5, V1=30ml and V2=500mlPutting value in equation 0.5*30= 500*M215=500M215/500=M2M2=3/100 MM2=0.03Mhope it helps you!!!!

Discovery of the Neutron (1932) The story begins in 1932, with the discovery of the neutron by Sir James Chadwick, an ENGLISH PHYSICIST. Until 1932, the atom was known to consist of a POSITIVELY CHARGED nucleus surrounded by enough NEGATIVELY charged electrons to make the atom electrically neutran...

these are MOLECULAR orbitalsExplanation:in 2p5 2P orbitals CONTAINS 5 electrons whereas in 2px1 it contains only 1 in x direction as x y & a are parts of 2p only

did you MEAN the Pascal in this there is a FORCE exerted by the to pascal and the FIVE p X 1 the answer is 20 Pascal

tion:Difficulties in BREATHING DUE to any such sneezing or DANGEROUS smell..

displacement reaction:-In this CHEMICAL reaction, TWO SUBSTANCES displace their elements from each other in ORDER to continue the reaction.

tion:because in SOCL2 SINCE cl is more electronegative and its no. is 2 but in SO2CL2 it is not

tion:Displacement REACTION is a chemical reaction in which a more reactive ELEMENT DISPLACES a LESS reactive element from its compound.

n= 3 and L = 1 Explanation : n REPRESENTS shell number .And l represents the subshell number In 3P ,3 is the shell number P is the subshell of value 1 ( Other subshell are s= 0 , p= 1 , d=2 , f=3)

tion:it was based on the the atom of the MOLECULE it atom atom molecule is GREATER than the MASS of the molecule will be also