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 Hey guys , hi. Welcome to another article presented by eStudyan. In this article we will discuss everything related to mole concept. This is a very demanded important topic for those who takes science in intermediate. Mole , molecule , molar mass etc. , These types of words haunts many students . And ,infact they do not understand this well after the end of their study also. If you also fear from mole then just read this full article. This will clear all your doubts  today. So let's start. Mole is just  a number.  It just tells us how much amount of particles present in a single atom. Suppose you went in market and you want to buy banana. The thing you will do there is you ask the banana seller to provide you banana. Then, he will asks you how much dozen banana you want.                       The dozen above means 12. Just like dozen in the above case , mole means 6.022×10 23 .  So now it should be clear that mole is just a number.  After the discovery of atom by John Dalton, sci

B allet dance, one of the most entertaining form of dance that we like to watch. If you had ever watched ballet , you must had watched the performer to rotate rapidly at one place. But have you ever thought how she do that easily. What is the technique behind this, that a normal person don't know and fails to perform this act.So let's explore this topic today. But before that we have to be clear about some basic concepts of motion of a body. So let's begin that first step by step:- 1.Momentum as you all know is the product of the mass of an object and it's velocity. This definition of momentum is limited to the linear motion of the object. But when the  object is rotating about an axis, it is undergoing rotational motion.                   It should be clear that rotational analogue of momentum is called angular momentum. We should now learn about the conservation of momentum which states that:- "Momentum neither be created nor be destroyed". So from the above

During a  hot summer day it feels relaxing to drink cold drinks such as:- pepsi, Coca-Cola etc. But when we open the bottle cap the cold drink seems to be splashing out with high pressure. Have you ever thought why it happens ? If yes then this article is for you. So let's start our today's explanation.                But wait! First of all we should be clear about its composition. So first let's see that:-  Aerated drinks (or cold drinks) mostly contains sugar and additives in them which enhances their taste. It contains carbon dioxide dissolved under very high pressure inside the bottle. Due to so much amount of sugar and carbon dioxide it is not advisable to take more aerated drinks. You can refer soda instead of it.                       It this carbon dioxide which feels us fizz on drinking.  It is this carbon dioxide which splashes out at very high pressure on opening the bottle caps. How this happens let's see:- The solubility of gases in liquids is directly pro

Nature shows many interesting and beautiful phenomena to us and we always curious to explore about those phenomenas. One such phenomenon is the formation of Rainbow in the sky. If you  want to explore about this topic just read this full article.             Rainbow :-.    It is the arch of seven colours which forms in the sky when it rains and sun is ⛅ in the sky at same time. How does rainbow forms?               We can see rainbow by standing in front of rain with our back in front of the sun. Now, before tuning to the formation of rainbow we should be clear about dispersion of light. So let's first learn about it.                   Dispersion of light The splitting of white light into seven colours i.e. Spectrum is called dispersion of light. This phenomenon can easily be observed by passing white light through a glass prism. Dispersion of light through glass prism The above picture shows the dispersion of white light through glass prism. The seven colours in which

It feels good to eat food when we are very much hungry, at that time we put much more solid items in our mouth. But have you ever wondered , how these solid particles (food items) gets digested in our body. Here comes a interesting process of digestion. I am going to explain you the process of human digestion step by step , so stay tuned on this article. 1. Ingestion :-  The   process in which we take food inside the body through mouth is called ingestion. Intake of food (ingestion) 2. Digestion :-      The process in which complex food particles breaks down into simple small particles is called Digestion. Our digestive system i) Digestion in mouth:- Now, most  of you people will wonder after listening that the digestion of food starts in mouth. Isn't it true?  Our mouth contains saliva which itself contains an enzyme called salivary amylase  which breaks starch of food into sugar. ii) Digestion inside stomach:- After this the food enters into stomach throug

 Our sky is the most prestigious sky in the solar system because it is the only sky in this solar system which has this much differences in the composition of different type of gases in its atmosphere. Why is our sky blue? But have you ever wondered! why it is blue ? not black or any other colour. Well there is a interesting physics behind it. Before going on that concept let me tell you some history of it.( For main explanation just scroll down👇). In ancient times many Greek physicist wondered about the blue colour of sky. One of them gave his thesis that God is watching from the sky, due to his blue eyes the sky looks blue. But as the science grow his thesis was only thought to be mythological thought which not get much attention of the modern scientists. Much more investigation s happen and another theory came which says that sky colour is due to the blue colour of ocean. But this also gets rejected by the modern scientists because why does sky appears blue in deserts.