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Why is it important to know the enthalpy of a chemical reaction?
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Why do chemists need to know the factors that affect reaction rates?
It is important to control chemical reactions in industry.
How do you know if an enthalpy change diagram is endothermic or exothermic?
If you plot the reaction coordinate (what I think you mean by "enthalpy change diagram"), the reaction will be exothermic if the products are lower on the graph than the reactants. If they are higher than it is endothermic. For instance, if you go to the linked Wikipedia page (link to the left of this answer), the graph shown is of an exothermic reaction.
Is charcoal burning in a grill physical or chemical?
Its a chemical change because the properties of charcoal are changing when fire makes contact with it. It is realising energy and that is one of the most important signs to know if it is a chemical reaction.
What is chemical reaction of patis?
i dont know .. I am sorry :)
How we know a chemical change has occurred when burning a candle?
Burning is a chemical reaction, an oxydation.
Why do chemists need to know the factors that affect reaction rates?
It is important to control chemical reactions in industry.
Is paint bubbling a chemical reaction?
yes ............... paint bubbling is a chemical reaction. when anything bubbles you know there is a chemical reaction.
How does the Gibbs free energy predict spontaneity?
It tells if the reaction will process spontaneously or not
How do you know if an enthalpy change diagram is endothermic or exothermic?
If you plot the reaction coordinate (what I think you mean by "enthalpy change diagram"), the reaction will be exothermic if the products are lower on the graph than the reactants. If they are higher than it is endothermic. For instance, if you go to the linked Wikipedia page (link to the left of this answer), the graph shown is of an exothermic reaction.
How much heat will be released when 6.44 grams of sulfur reacts with excess iron oxide?
You need to know the ∆H of this reaction, or the enthalpy change. If you know the enthalpy change, then convert the 6.44 g of sulfur to moles, and use stoichiometry to determine what fraction of a mole was reacted, and multiply that time the value of ∆H of the reaction
An amtom undergoes a reaction ant attains a more stable from how do you know is it was chemical or nuclear reaction?
If an atom undergoes a reaction and attains a more stable form, you know if the reaction was a chemical reaction or a nuclear reaction by studying what exactly happened to the atom.
Does an exothermic reaction contain more chemical energy than reactants?
depends , if the reaction is endothermic or exothermic. if the reaction is endothermic , the energy needed to break the bonds is greater than the energy that forms bonds.and to break bonds you need thermal energy , meanwhile forming bonds gives off energy. now if the reaction is exothermic the energy given off the bonds form are greater than the enrgy needed to break them. you know if the reaction is exothermic or endothermic because exothermic have a negitave delta next to d eqn.while endothermic have a positive delta.
Is charcoal burning in a grill physical or chemical?
Its a chemical change because the properties of charcoal are changing when fire makes contact with it. It is realising energy and that is one of the most important signs to know if it is a chemical reaction.
When hydrochloric acid is mixed with calcium is that a chemical or a physical reaction?
chemical how do you know?
Is picking up iron filings with a magnet a chemical reaction?
No, a chemical reaction is when the atoms are not mixed together but chemical bonded together. You know when a chemical reaction has happened when you can smell, hear or see things reacting.
What are the five ways to know that chemical reaction happened?
don't know
What is chemical reaction of patis?
i dont know .. I am sorry :)
