basicchemistrynotes

The principle properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling. We talk about water our favourite molecule.  It’s polar. It’s shaped like an outstretched V. Its properties are awesome. Also, it makes up ¾ of the Earth’s surface.Our favourite molecule is water. And we’re not going to lecture you about how important water is and the fact that all  life as we know it could not survive without it, because yeah that’s true, but we really want to talk about what makes water so unique for biology itself. What are these awesome  properties? Polarity We mentioned the shape of water and the fact that it is polar. It has one very electronegative oxygen that is always trying to keep the electrons closer to it than to the hydrogens it is bonded to. This actually gives the oxygen a slightly negative charge---because of the electrons that are spending more time next to it---and it gives the hydrogens a slightly positive ch

What is partial pressure? Definition of partial pressure In a mixture of gases, each gas contributes to the total pressure of the mixture. This contribution is the partial pressure . The partial pressure is the pressure the gas if the gas were in a similar volume and temperature without anyone else. Dalton's law expresses the total pressure of a blend of ideal gases is the sum of the partial pressure of every individual gas. While the typical symbol for pressure is P or p, partial pressure is demonstrated by an addendum (e.g., P1 or p1). Partial pressure is important in the fields of chemistry, physics, and biology. Blood levels of oxygen and carbon dioxide are directed by assessing their partial pressure. Example of partial pressure Intermolecular forces and we start making a little bit more of a condensed phase such as solids and liquids. you start getting all these unique properties of solids and liquids.  liquids have quite a few unique ones vis

Molality Formula  It is characterized as the quantity of moles of solute  present in 1 kg of solvent &  is denoted by m. When we are estimating the physical parameter of an answer, what would it be a good idea for us to do? For certain reason, the use of molality to be sure is the most regular decision. Be that as it may, when we need to know the solute fixation in a  circumstance where there's a changing in temperature, molality won't work. This is on the grounds that the arrangement's volume will change somewhat alongside the temperature, that changes ends up having a slight impact to give a mistake that should be precise. Another parameter's required, something that isn't influenced by the temperature. Molality = moles of solute(moles)                                      Mass of solvent(Kg) Molality Formula Questions: 1) What is the molality of an answer if 5.0 moles of solute are dissolved in 1.0  kilograms of water? Answer:           

What is molarity? It is the most broadly utilized unit and is indicated  by M.  Molarity is characterized as the quantity of moles of the solute in 1 liter of the arrangement. Thus, Molarity (M)= No . of moles of solute    Volume of solution in litre Example, 1) 5 moles of solute present in 500ml of solution, what is molarity? Answer- Molarity (M)= 5 moles                                             0.5 ltr                                        = 5 × 10                                                5                                        = 10M (Explained, 500 ml solutions means in litre is 0.5 ltr.) Calculation of Molarity For example, 1) 80 gm of NaoH present in 400 ml solution, What is Molarity? Answer - moles of NaoH = 80 gm                                                      40 moles                                              = 2 moles                        Molarity (M) = 2 moles                                                   0.4 litr

Introduction to stoichiometry The word ‘ stoichiometry ’ is derived from two Greek words - stoicheion (meaning element) and metron (meaning measure). Stoichiometry is the study of numerical relationship between the amounts of reactants used and amounts of products formed by a chemical reaction. Stoichiometry is based on the law of conservation of mass and the mass of reactants equals the mass of the products. Why do we use this? Stoichiometry problems consist of predicting the amount of gram of product that will form from a reaction.if you know how many grams of reactants you have predicting the number of gram of reactant that will be needed to produce a certain amount of product. How can stoichiometry be used in real life? Let's we start this, stiochiometry can be used in cooking. We going start baking a butter cake, for baking a butter cake needed some ingredient like flour,butter,suger,eggs for bake a nice and tasty butter cake. all this ingredient requi