10th Science | One Day 2 Details Day 3 | TN State Board | Prakash Sir

[00:00:04]Good morning my dear warriors.

[00:00:07]Good morning. Am I audible? Good morning. Good morning. Good morning.

[00:00:13]Welcome back to the session.

[00:00:16]Very good morning.

[00:00:26]Good morning.

[00:00:34]Yes.

[00:00:42]Yes. Yes.

[00:00:51]Lakmishai Kanishka Shifa regular students Lakshia Kaneska. Yes.

[00:01:00]Subashri shifa.

[00:01:03]Good. Good.

[00:01:16]Chapter Master, Sri Krishna, Ashika, Dines, Jay, Tamil, Daran, Krishnant Anushriishandrisha very good. Good morning. Good morning.

[00:01:51]Night study is very very very important today.

[00:02:01]Telegram channel. So okay 100 questions.

[00:02:29]Don't miss it.

[00:02:31]message.

[00:02:36]Okay. Sure.

[00:02:46]Types of question.

[00:02:50]I think Fore.

[00:03:27]Yes. Got it. Got it. Yes. guys. Yes.

[00:03:55]foundation just join there. Okay.

[00:04:06]You can directly go there.

[00:04:11]Okay.

[00:04:14]Right.

[00:04:19]microscope.

[00:04:23]Let that be there microscope microscope.

[00:04:36]We will study on that.

[00:04:48]Because rightapign Calculate the number of watercules.

[00:05:23]What is that number?

[00:05:29]Last week computer biology number of water molecules. Number of water.

[00:05:50]Number of particles.

[00:05:54]Number of particle number of particles. Yes.

[00:06:09]They have given mass.

[00:06:13]Starting number of particles.

[00:06:47]I have to find the number of particles.

[00:07:07]Mass divided by molar mass.

[00:07:18]mass.

[00:07:22]H2O.

[00:07:23]M of m of H2O.

[00:07:37]Oxygen 0.18 / 18 32 32 32 + 16 18 g 0.1 0.0.1 or 0.0 18 into 100 divided by 18.

[00:08:33]Sorry.

[00:08:36]18 / 18 into 100 cancel 0.01 moles 0 0.01 moles 0.01 moles 0.01 01 number of particles into NAL number 6.0 0 2 3 into 10 ^ 23 number of particles. Final answer number of particles equal to 0.01 into 10 ^ sorry 0.01 into 6.023 023 into 10 ^ 23US 10 - 2 into 0.6.023 into 10 ^ 23 - 6.023 0 23 into 10 ^ 21 is the answer.

[00:10:12]Very good. Very good.

[00:10:27]Last class.

[00:10:43]What is my goal?

[00:10:47]for exam. Okay. Right.

[00:11:07]Th000 plus One of nitrogen.

[00:11:41]2 into 14 = 28.

[00:11:49]2 into 14 = 28.

[00:11:54]Add 3 moles of hydrogen. 3 mo of H2 H2 H2 into 2 into 1 = 6.

[00:12:10]Six moles of ammonia NH3 nitrogen 14 hydrogen nitrogen 3 total 17 2 into 17 2 into 17 = 34 H that's it that's it that's it that's it that's it yes super 34 H 2000 plus right okay thank you cycle see one of the most important very very important very important very very important very very very very important number of molesate the number of moles Just easy for moles equal to what is the formula of mole? Mole is equal to mass by molar mass. Mass given it as 27 g. Mar mass of aluminium 27. Mole equal to 27 by 27 27 / 27 = 1 mole.

[00:13:56]1 mo. Final answer. One mole is the final answer. Correct. One. Very good.

[00:14:02]Super.

[00:14:06]Very good. Super duper. Next question.

[00:14:10]1.513 of NH4.

[00:14:17]Number of particles.

[00:14:19]We have to find number of particles.

[00:14:24]Number of particle.

[00:14:40]Right. Right. Number of particles number of particles. mole number of particle divided by divided by a number 1 51 into 10 ^ 23 divided by 6.023 023 into 10 ^ 23 cancel 23 Right.

[00:15:52]Question one four moles answer parents. Parents teachers association parents teachers association so parents teachers association right first revision Right. Fion July public exam Q H July 24 April examination July August September attempt exam.

[00:17:14]Okay.

[00:17:17]Uh, the most question So one of the most most most question up question most important question ultra promax important Brothers bookch.

[00:18:33]Public exam 77% actually 33% percentage half Right.

[00:19:23]Modern atomic theory.

[00:19:34]Atoms are no longer indivisible.

[00:19:44]atom cannot be divisible.

[00:19:50]Atom is no longer indivisible.

[00:20:07]No longer indivisible.

[00:20:14]for atoms of same element may have different atomic number. Atoms of same element.

[00:20:46]They have a different mass and a different mass chlorine. Example example chlorine chlorine. So same element atomic number atomic number superch Chlorine 35, chlorine 37. Same at different. For example, twin brother.

[00:21:38]Twins brother.

[00:21:50]Atoms of same element may have different atomic masses.

[00:22:00]It is called isotopes.

[00:22:04]These are important. This is called isotopes.

[00:22:08]Isotope.

[00:22:25]Just your motivation.

[00:22:37]Atoms of different elements may have same atomic masses.

[00:23:06]That is called isobar.

[00:23:08]That is called isobar. Example calcium. Best example.

[00:23:16]Organium.

[00:23:20]Calcium.

[00:23:36]Okay.

[00:23:39]Atoms of one element can be transmuted into atoms of another element.

[00:23:46]Atoms of one element can be transmuted into atoms of another element.

[00:23:53]Oh my god.

[00:23:58]atoms of one element.

[00:24:02]For example, uranium uranium nuclear physics. Uranium Helium 10.

[00:24:47]So uranium transmuted atoms may not always combine in simple whole number ratio.

[00:25:14]ratio may not always combine in a simple whole number ratio.

[00:25:29]Right?

[00:25:31]Smallest particle which takes place in the chemical reaction.

[00:25:42]The smallest particle that takes place in chemical reaction is an atom. Atom is the smallest particle.

[00:25:52]It is going to be take part in a chemical reaction. Mass of atom can be converted into mass of the atom can be converted into energy. Mass of the atom can be converted into energy. E is equal to MC². E= MC² E= MC². Okay. E is equal to MC² E= MC² mass energy equation mass energy equation equation mass energy equation Right.

[00:26:55]One of the biggest questions.

[00:27:01]Derive the relationship between relative molecular mass and vapor density. Derive the relationship between relative molecular mass and vapor density.

[00:27:22]difference.

[00:27:40]Uranium is element that is not compound.

[00:27:44]Uranium element, right?

[00:27:52]The relative molecular mass of a gas or vapor is the ratio between mass of one molecule of gas or vapor to the mass of one atom of hydrogen. Right?

[00:28:11]They going to compare it.

[00:28:14]They going to compare it. The relative molecular mass of a gas or a vapor is the ratio between the mass of one molecule of gas.

[00:28:35]Relative ratio between ratio.

[00:28:43]What do we have to do for ratio? Ratio mass of one molecule of a gas.

[00:28:54]And the molecular gas for example mass of a gas or vapor gas or vapor It is a ratio mass of the gas mass of one atom of hydrogen right mass of certain volume of gas or vapor.

[00:29:55]Mass of volume certain volume. Mass of certain volume of gas or vapor to the mass of equal volume of hydrogen.

[00:30:17]Mass of certain volume of gas or vapor.

[00:30:23]gas for example.

[00:30:52]STB STB STB standard temperature and pressure.

[00:31:10]H right I'm so excited right next volume equal volume of all gases.

[00:31:43]For example, Equal volume of all gases. Size gas volume. Equal volume of all gases.

[00:32:18]Volume equal.

[00:32:24]Oh my god.

[00:32:28]Volume number of molecules.

[00:32:40]contain equal number of molecules.

[00:32:48]Huh? Equal number of right.

[00:32:53]One letter.

[00:32:59]One letter. One letter. One letter.

[00:33:04]According to equal volume of all gases contain equal number of molecules.

[00:33:31]Sorry.

[00:33:40]Number of molecules in one volume is equal to n. Number of of gas.

[00:34:13]Can I write it or not?

[00:34:19]Mass 10 g is equal to 10 into 2 by 2.

[00:34:37]Right. Okay.

[00:34:45]Mass of one molecule of hydrogen.

[00:34:49]mass of molecule of hydrogen divided by n.

[00:35:00]So no class relative molecular mass mass of one molecule of gas divided by mass of one atom of hydrogen one molecule of gas divided by one atom of H2 relative Molecular mass equal to two vapor density.

[00:35:53]Mass of one molecule of gas mass of one atom of hydrogen equal to vapor density.

[00:35:59]2 into vapor density.

[00:36:02]Right.

[00:36:07]Vapor density mass of one molecule of gas mass of one of one of you will get answer. Two atoms of hydrogen 2 into mass 2 into RM V is equal to V. Vapor density equal to 2. Vapor density.

[00:36:35]Vapor density equal to 2 into R.

[00:36:50]RM equal to 2 into V.

[00:36:53]RM relative molecular mass equal to 2 into V.

[00:37:00]Relative molecular mass equal to 2 into BD.

[00:37:27]Book page number.

[00:37:50]right equal to STP Ech.

[00:38:10]VD mass of one molecule of gas or vapor distributed one of hydrogen.

[00:38:37]Hydrogen is a diatomic molecule.

[00:38:45]One molecule of hydrogen two H atoms two atoms of hydrogen into two 2= 1 into 2. Same 2= 1 and 2 1 2 is 2 relative massive molecular mass divided by Relative molecular mass equal to relative molecular mass equal to 2 into vapor density.

[00:39:41]Right?

[00:39:44]It is a diatomic.

[00:39:50]H2 hydrogen gas formula H2 right.

[00:40:13]Yes, approximately 100.

[00:40:20]Soap we are moving to eth chapter 8.

[00:40:33]Monday morning Monday morning.

[00:40:39]Monday morning.

[00:41:06]Don't worry. Don't worry. Waiting for night stud. Right. So, night stud. Okay.

[00:41:18]Last week.

[00:41:34]I'm going to give you a task this week also I will be giving the task this one of the biggest thing more than 200 students 200 students they have given it more than 200 they have just completed their task content I was so happy.

[00:42:23]for see this atomic number he won't forget it problem.

[00:43:00]So literally they have did it students rocked it.

[00:43:11]student did it. They have just simply sit and write it.

[00:43:32]10 moles of oxygen oxygen number of particles yes more than 200 100.

[00:44:22]So, student.

[00:44:41]Right, right, right. Super. So, okay.

[00:44:52]Because okay just completely take rest. Okay completed which is very important. I will be giving some task. So get ready for the task everything. Okay.

[00:45:13]Okay. Thank you. Bye-bye. See you.

[00:45:20]Take rest.

[00:45:34]So yeah, right