By direct calculation we get 2 ÷ 7 = 0.2857 Multiply your answer by 100. 0.2857 ⋅ 100 = 28.57 As a percentage: 28.57 % 2 is approximately 28.57... View Article
Function of cranial bone The bones in your skull can be divided into the cranial bones, which form your cranium, and facial bones, which make up... View Article
The electronic configuration of N2 is (σ1s) 2 (σ∗1s) 2 (σ2s) 2 (σ∗2s) 2 (π2px) 2 (π2py) 2 (σ2pz) the total number of electrons present in the... View Article
The barium chloride has a chemical formula i.e. BaCl2and it has a molar mass of 208.23 g mol-1. This salt is made with one barium cation (Ba2+)... View Article
Let x be the oxidation number of sulphur in sulphuric acid. Then we got: Oxidation number of Oxygen= -2 Oxidation number of Hydrogen= +1 1 â‹… 2 +... View Article
This is an AX4 -type molecule, with four Si-Cl bonds. According to VSEPR theory, these bonds must be pointing towards the corners of a regular... View Article
A simple epithelium is an epithelial tissue that is composed of a single layer of epithelial cells. These cells are in direct contact with the... View Article
FeSO4 is the chemical formula of iron(II) sulphate or ferrous sulphate . The colour of a ferrous sulphate solution is blue-green. FeCI3 is the... View Article
The aneroid barometer is used to measure atmospheric pressure as well as altitude. It consists basically of an evacuated flat cylindrical closed... View Article
For any element: Number of Protons = Atomic Number Number of Electrons = Number of Protons = Atomic Number Number of Neutrons = Mass Number -... View Article
Carbohydrates are basically compounds made up of carbon, oxygen and Hydrogen. The general formula if carbohydrates is Cx(H20)Y Glucose is C6H12O6... View Article
The average atomic mass of Br is 79.91 u. There are two ways to solve this problem. Let's assume we have 10 000 atoms of Br. Then 5069 atoms will... View Article
Cube root of a number can be found by a very simple method which is the prime factorization method. Cube root is denoted by ‘∛ ‘ symbol. The... View Article
The energy associated with a chemical reaction that can be used to do work. The free energy of a system is the sum of its enthalpy (H) plus the... View Article
The concept of entropy was introduced into the study of thermodynamics by Rudolph Clausius in 1856 to give a quantitative basis for the second... View Article
There is no chemical formula for air as it is a mixture of many compounds. The major components would be Nitrogen (N2), Oxygen (O2), Carbon... View Article
The ideal gas equation is pV = nRT, simpler gas laws such as Boyle's, Charles's, Avogadro's and Amonton's law be derived. The four gas variables... View Article
NMR spectroscopy is an ideal technique for identifying the structure of molecules using NMR spectroscopy. Higher electron density around hydrogen... View Article
To calculate the molar mass add the mass of each element The molecular formula of methane is CH4. There are total 4 bonds between C and H atom... View Article
