A student made the table shown to list some contact and non-contact forces. Examples of Forces Contact Forces Non-Contact Forces
2 answers:
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Answer:
A catalyst decreases the activation energy of a reaction.
Explanation:
A catalyst allows a reaction to go through a new pathway that has a lower activation energy. Therefore, it will recquire less energy to reach the transition state (activated complex) which increases the rate of the reaction. This is the reason why adding a catalyst makes a reaction faster.
The figure attached shows the graphical representation of the effect of a catalyst on the activation energy.
I would use the following steps:
- Write the <em>balanced chemical equation</em> for the reaction.
- Use the molar mass to <em>convert the mass of the reactant to moles</em>.
- Use the molar ratio of product:reactant from the balanced chemical equation to <em>convert moles of reactant to moles of product</em>.
- Use the molar mass of the product to <em>convert moles of product to mass of product</em>.
You can use the diagram below to remind you of the importance of the <em>molar ratio</em> in mass-mass conversions
You must get over the mole “hill” to make the conversion.
