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What else can I help you with?
Undergo no chemical change during a chemical reaction?
A catalyst doesn't undergo a chemical change during a chemical reaction.
What substance changes the rate of a chemical reaction without changing itself?
A catalyst is a material that promotes a chemical reaction by its mere presence. It isn't changed or consumed in the process. Wikipedia has more information, and a link is provided.
A pycnocline is a boundary between changing regions of which of the following properties?
A pycnocline is a boundary between changing regions of water density in the ocean or other bodies of water.
Which of the following do the changing seasons have the most influence on?
The hibernation patterns of ground squirrels
Which would most likely favor species survival in changing environmental conditions?
Species with genetic variation and diversity are more likely to survive changing environmental conditions because they may have individuals with traits that can adapt to the new conditions. Additionally, species with short reproductive cycles and large population sizes are better able to adapt quickly to changing environments through natural selection.
How can the spontaneity of a reaction be reversed?
The spontaneity of a reaction can be reversed by changing the conditions such as temperature, pressure, or concentration of reactants, or by adding a catalyst.
What does a catalyst do to the rate of a chemical reaction?
A catalyst is a substance that speeds up the rate of a chemical reaction without changing the substance. It does this by reducing the minimal reaction energy. A catalyst is not used up in a reaction therefore they last indefinitely.
How would the equilibrium concentration of H2O be affected by adding a catalyst to the mixture?
Adding a catalyst to the mixture would not affect the equilibrium concentration of H2O. A catalyst speeds up the rate of the forward and reverse reactions equally, without changing the position of the equilibrium. This means that the equilibrium concentration of H2O would not be affected by the presence of a catalyst.
Is a catalyst a substance that maintains the pH even when the amounts of acid or base are changing?
No, I think what you're thinking of is a 'buffer' or more correctly a 'buffering agent'. A catalyst is a chemical substance which allows a chemical reaction to occur between two or more other chemicals (often at a quicker speed and/or with a lower amount of energy needed) because of the presence of the catalyst. The other thing that is important is that a catalyst is not used up in the course of the chemical reaction. I hope that is helpful.
Why doesn't a catalyst effect the position of equilibrium in a chemical reaction?
A catalyst speeds up both the forward and reverse reactions equally, allowing the system to reach equilibrium faster without changing the position of that equilibrium. It lowers the activation energy required for the reactions to occur but does not alter the relative energies of the reactants and products. Thus, while a catalyst increases the rate at which equilibrium is achieved, it does not affect the concentrations of reactants and products at equilibrium.
What is a characterstic which increases the chance of survival?
Adaptability is a characteristic that increases the chance of survival. Being able to quickly adjust and respond to changing circumstances or environments can help individuals or species overcome challenges and thrive in adverse conditions.
What is a substance that speeds up a chemical reaction with out changing permanently or being used up?
This is called a catalyst.
What is a substance that speeds up the chemical reaction pernmanently changing?
Catalyst. Biological catalysts would be enzymes.
What is a biological catalyst that lowers the activation energy of reaction in cells and speeds reactions?
A biological catalyst that lowers the activation energy of reactions in cells is called an enzyme. Enzymes are proteins that facilitate biochemical reactions by providing an alternative reaction pathway, allowing reactions to occur more rapidly and efficiently. They are specific to substrates and can be regulated, enabling cells to respond to changing conditions and metabolic needs.
If a catalyst is added to a system at equilibrium and the temperature and pressure remain constant?
The catalyst will accelerate the forward and reverse reactions equally, therefore not changing the position of the equilibrium. This results in the system reaching a new equilibrium faster but with the same concentrations of reactants and products as before the catalyst was added.
What experimental conditions will be varied in an attempt to affect the rate of the clock reaction?
Experimental conditions that could be varied in an attempt to affect the rate of the clock reaction include changing the concentration of reactants, temperature of the reaction, presence of a catalyst, pH of the solution, or the ratio of reactants. By altering these factors, the reaction rate can be manipulated and studied to understand the mechanism of the reaction.
What is a catayst?
A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the reaction itself. Catalysts work by providing an alternative reaction pathway with lower activation energy, making it easier for the reaction to proceed.
