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The sum of the masses of the reactants and the masses of the resulting substances, at a specified moment.
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∙ 13y ago
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After a chemical reaction starts when will a chemical reaction end?
When the limiting reactant is completely used up. A limiting reactant is the reactant that determines the amount of product. To determine this use the balanced chemical reaction with the masses of the reactants to determine the moles of product formed. The reactant that forms the least amount of product will be the limiting reactant.
Define limiting reactant?
In a chemical reaction the limitting reactant is also know as limiting reagent.it is the substance which is totally consumed when the chemical reaction is complete.the reacton can not proceed without it.
Does the total number of atoms stay the same during a chemical reaction?
Indeed by the Law of Conservation of Mass, mass cannot be lost or gained through a reaction. Similarly, atoms cannot be lost, gained or somehow transformed themselves-only rearranged into different compounds. This means there are still going to be the same amount of Hydrogen atoms after a reaction as there were before.
Is the reaction product sodium chloride more or less stable than the reactants sodium metal and chlorine gas?
The reaction product is much more stable, because the reaction to produce it releases a large amount of chemical potential energy as heat.
What does the term excess mean in chemistry?
The word "excess" is used in chemistry primarily to compare the amount of one reactant available for reaction with the amount of a different such reactant. The reactant that is present in more than sufficient amount to react completely with all the other reactants, to produce the expected product(s), is present in "excess".
Is it true that the amount of matter present appears to change during a chemical reaction?
The total mass remain unchanged.
What does the amount of energy affect during a chemical reaction?
A chemical reaction need an activation energy to start.
Does the amount of energy change during a chemical reaction?
duuh...of course it does
What happens to the amount of energy during a chemical reaction?
Do it yourself idiot.
What is the amount of energy a reaction needs to take place?
The amount of energy a reaction needs to take place is called activation energy. When this much energy is present, a chemical reaction can occur.
What is constant during a chemical reaction?
Amount of energy because it can not be created or destroyed.
The enthalpy change for a chemical reaction exactly as it is written is what?
The amount of energy that is lost or gained by the products during the reaction.
What are the salient features of catalyst?
A catalyst alters (usually increases) the speed of a chemical reaction in which there is no net change in the amount of catalyst present after reaction is complete.
What is the definetions of limiting reactant in chemistery?
In a chemical reaction the limiting reactant is the reactant that there is the least of in the reaction; it determines the amount of product formed. In a chemical reaction it is the reactant that gets completely "used up"
Does the total amount of mass during a chemical reaction increase?
The total mass of the compounds remain constant.
When a catalyst is present and more or less activation energy is needed to start a chemical rection?
A catalyst reduces the amount of activation energy needed to start a chemical reaction.
What are the features of catalyst?
A catalyst alters (usually increases) the speed of a chemical reaction in which there is no net change in the amount of catalyst present after reaction is complete.
