A chemical formula represent the elements in a compound and the number of atom of each lament is the smallest unit of that compound. For example H2 o is the chemical formula for water, where 2 hydrogen atoms and 1 oxygen atoms are bonded togher.
The empirical formula represent the simplest whole number ratio of elements in a compounds .For example , the empirical formula of glucose is because it simplifies the ratio of carbon hydrogen , and oxygen atoms to 1; 2;1
To find the empirical formula, divide the number of moles of each element by the smallest number of moles .Then multiply the results by a common factor to obtain whole numbers.
The molecular formula shows the actual number of atom of each elements in a molecules, while the empirical shows the smallest ratio of these elements. For instance, the molecular formula of hydrogen provides is while its empirical formula is HO.
The empirical formula helps chemists understand the basic composition of a compound provides a way to describe compound in their simplest form, making it easier to compare similar compounds.
Sodium chloride is composed of on sodium atom and one chloride atom. It is common ionic compound that forms when sodium donates an electron to chloride.
The formula for sulfuric acid. It consists of two hydrogen atoms and four oxygen atoms making it a strong diprotic acid used in various industrial processes.
The chemical formula for methane is. Methane is the simplest alkane, consisting of one carbon atom bonded to four hydrogen atom.
To determine the formula carbon dioxide is CO consisting of on carbon atom and two oxygen atoms. It is colorless, order less gas provides by the combustion of carbon based substances.
TO determine the formula first identify the elements involved and their respective charges. Then combine the elements in ratio that balance the charges to create neutral compound.
Avogadro number, 6.022x1023 represents the number of particles none mole of substances. It provides a link between the macroscopic word and the atomic scale.
One mole of any substance contains 6.022x1023 molecules as described by Avogadro number his is true regardless of the substances being considered.
Avogadro number is used to convert between the number of moles and the number of particles. For example, 1 mole of water contains 6.022x10 molecules of water.
, Three 2x6.022x10 molecules of O and since molecules of O contains 2 oxygen atoms three are 4.044x10 atoms of oxygen.
To calculate the number of particles, multiply, The number of moles by Avogadro number .For example 3 moles of oxygen contains 3x6.022x10 molecules of oxygen.
The mole concept is a way to count , molecules or ions by using a standard unit called a mole one mole equals 6.022x10 particles with is Avogadro number.
Molar mass is the mass of one mole of a substance usually expressed in grass per mole .For example: the molar mass of water is approximately 18g/mol.
To calculate the molar mass add the atomic masses of all the atoms in one formula .For example .For instance the molar mass of NaCl is 58.5g/ mole calculated by adding the atomic mass of sodium an chlorine .
The molar mass of carbon dioxide is 44g mole. This is calculated by adding the atomic mass of carbon and twice the atomic mass of oxygen.
To convert grams to moles, divide the mass of the substances by it molar mass .For example to find the number of moles in 36g of water, divide 36 g by 18 gmol to get 2 moles.
A chemical equation is a representation of a chemical reaction showing the reactants and products. For example represent the reaction of hydrogen and oxygen to form water.
A balanced chemical equation has the same number of atoms of each elements on both sides, adhering to the law of conversation of mass .An imbalanced equation does not yet have equal atoms on both sides.
A composition reaction is a type of chemical reaction in which a substance reacts with oxygen producing heat and often light.
A decomposition reaction occurs when a single compound breaks down into two or more simpler substances. An example is the decomposition of calcium carbonates.
A double displacement reactions involves in to two ionic compounds reacting in aqueous solution, swapping their ions.
To calculate the amount of product, use the mole ratio from the balanced chemical equation relate the amount of reactant to the amount of product. Then, convert moles to grams using the moles of mass of the product.
In this reaction 2 moles of hydrogen product 2 moles of water. Since the molar mass of water is an 18g/ mole 2 moles of water would have a mass of 36 g.
Molar mass of CO2 = (1x12.01)+(2x16.00) =44,01 g mole Moles = Mass = Molar Mass = 88= 44.01= 2 moles
Solution: Molar mass of H2O (2x1.01) + (1x16, 00) =18.02g/mole Mass= moles x Molar Mass = 3x18.02= 54.06 g
1 mole= 6.022x10 molecules Molecules= moles 6.022x10 Molecules =26.022x10 = 1.204x10 molecules
