In order to determine the mass of a compound from a chemical equation, you need to look at the chemical formula for the compound you need to find the mass of. Using the Periodic Table, add up the Atomic Mass of each atom in the compound. For example, the molar mass of ethane, C2H6, is 12.01+12.01+1.008+1.008+1.008+1.008+1.008+1.008 = 30.068 grams/mole
In order to find the mass of a product in a chemical equation, you need to convert any information you are given into moles. You can use this information to determine how many moles of product are produced using the ratio given by the chemical equation. Then the number of moles of product is converted to mass using the molecular weight of the compound as determined above.
example)
2Na(s) + 2H2O(l) --> 2NaOH(aq) + H2(g)
Find the mass of hydrogen gas produced if 23 grams of sodium react with excess water.
Atomic mass of sodium: 22.99 grams/mol
(23grams)/(22.99grams/mol) = 1 mole sodium
The ratio of sodium to hydrogen gas is 2:1 so:
(1 mol Na) * (1 mol H2)/(2 mol Na) = .5 mol H2
The atomic mass of hydrogen is 1.008, so the molecular weight of H2 is 1.008 +1.008, or 2.016 grams/mol.
(.5 mol H2) * (2.016 grams/mol) = 1.008 grams of hydrogen gas produced.
2NaCI is the chemical formula(there is no equation). The compound is called D-Glucosamine Sulfate.
Chemical formula is representative for the chemical compositon of a compound. Chemical equation is representative (describe) for a chemical reaction.
The reactants must be balanced correctly with reactants.
No, the arrow indicates which way the reaction proceeds, often with 2 arrows being used pointing in both directions indicating the reaction is in equilibrium. The compound's mass can be calculated using the molecular mass of the compound from the periodic table.
An unbalanced equation having diffrent mass on both side of equation is called skeletol equation.
This is the chemical formula (not equation) of the sulfuric acid.
There is no chemical equation for argon. A chemical equation describes a process, not an element or compound. Argon does have a chemical symbol, which is Ar.
Sodium chloride is a compound; a compound has a chemical formula (or a formula unit) not a chemical equation. The formula unit of sodium chloride is NaCl.
2NaCI is the chemical formula(there is no equation). The compound is called D-Glucosamine Sulfate.
When a compound produces.
it means the compound is dissolved in water.
Chemical formula is representative for the chemical compositon of a compound. Chemical equation is representative (describe) for a chemical reaction.
it means the compound is dissolved in water.
it means the compound is dissolved in water.
the equation is unbalanced becoz the mass is not the same on both sides of equation such a chemical equation is a skeletal chemical equation for a reaction
a balanced chemical equation according to the law of conservation of mass is that equation in which both the products side atoms are equal to the reactants side atoms.BEfore and after the chemical reaction.
no it is not chemical change it is a mass transfer operation in which mass is transferd from higher concentration compound to lower compound