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Atomic Mass is the sum of the protons and neutrons in the nucleus. It also takes Isotopes into consideration in an amount that is dependent on their frequency in nature.
Eg. Carbon 12 is normal(6 protons, 6 neutrons), but carbon 13 and 14 have 1 and 2 additional neutrons, respectively. Their frequency in nature is what factors them into the atomic mass on a Periodic Table.
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What is the theoretical yield of ethanol?
This question cannot be answered as written. The chemical equation is needed, as well as the masses of the reactants.
Is a chemical equation balanced when each sum of molecules is the same?
Yes. There must be the same number of atoms of each element on each side of the equation.
What represents the correct way to write a chemical equation reactants--products products equals reactants reactants equals sum sum--- reactants?
reactants ---> products
What represents the correct way to write a chemical equation reactants ----- products products equals reactants reactants equals sum sum ---- reactants?
reactants -----> products is correct
How can the efficiency of a chemical reaction be expressed?
A chemical reaction is represented by a chemical equation.
How does a balanced chemical equation show that mass is never lost or gained in a chemical reaction?
Because the Balanced equation can correctly add the reactants and it will equal the sum of the products.If a chemical equation is balanced correctly, there will be the same number of each element on both sides. Since each element has a given and known mass, the total mass on each side of the balanced equation must be equal.
What is the theoretical yield of ethanol?
This question cannot be answered as written. The chemical equation is needed, as well as the masses of the reactants.
How much is the total mass of an atom?
The atomic mass is the sum of the masses of protons and neutrons. Electrons have almost no mass and are usually not figured into the equation.
During a chemical reaction the total amount of mass present?
The sum of the masses of the reactants and the masses of the resulting substances, at a specified moment.
Is a chemical equation balanced when each sum of molecules is the same?
Yes. There must be the same number of atoms of each element on each side of the equation.
What law is the mathematical relationship between the sum of the masses of the reactants and the sum of the masses of the products?
daltons law!
How does law of the conservation of mass apply to chemical reactions?
The Law of Conservation of Mass applies to chemical changes. When considering a chemical change this would mean that the total mass of all of the reactants in the chemical reaction is equal to the total mass of products in the chemical reaction.
What does stoichiometric mean in chemistry?
Stoichiometric refers to the ratio of reactants in a chemical reaction that ensures complete consumption with no excess. It is based on the molar quantities of substances involved in a balanced chemical equation. A stoichiometric amount of reactants results in maximum product formation.
What represents the correct way to write a chemical equation reactants--products products equals reactants reactants equals sum sum--- reactants?
reactants ---> products
How does a chemical equation show the mass conservation?
ex: water. 2 hydrogen atoms plus 1 oxygen atom equal one molecule of water. However the process includes 2 molecules of oxygen, so there must be 4 molecules of hydrogen to illustrate the law of conservation of mass, therefore one chemical reaction creates 2 molecules of water. FORMULA: 2 0 + 4 H = H20, H20 (there are 2 oxygens and 4 hydrogens on each side of the equation)
What represents the correct way to write a chemical equation reactants ----- products products equals reactants reactants equals sum sum ---- reactants?
reactants -----> products is correct
How does a balanced chemical equations how that mass is never lost or gained in a chemical reaction?
if you balanced the equation correctly then the sum of the reactants will equal the sum of the the products because if there is the same amount of atoms on the reactants and the products obviously none is lost.
