Match the following processes with its effect on reaction rate. Increase A. Increase reaction rate concentration (faster reaction) - C Increase B. Decrease reaction rate temperature (slower reaction) - C Decrease surface area - Use a catalystcoca R = reactants P = products For the above energy profiles, which reaction is the most exothermic? O All have the same activation energy. Consider the Particle Representation and accompanying Atom Key. Which one statement does NOT correctly describe the diagram? Particle Representation: Atom Key: . = Hydrogen (H) = Oxygen (0) = Nitrogen (N) = Copper (Cu) There is one molecule of the compound hydrogen peroxide (H202). There are three molecules of the compound nitrogen monoxide (NO). There are six atoms of the element oxygen. O There are three atoms of the element copper.One of these representations is not like the others. Which one does not belong? A. \"The reaction is exothermic." Products Surroundings Consider the Particle Representation and accompanying Atom Key. Which set of formulas correctly describe the diagram? Particle Representation: Atom Key: . = Hydrogen (H) = Oxygen (0) O = Sodium (Na) = Chlorine (CI) O Nag + 2 HCI + 6 CI + 3 H20 3 Na + 2 HCI + 3 Cl2 + 3 H20 3 Na + 2 HCI + 6 CI + 3 H20 O Nag + 2 HCI + 3 Cl2 + 3 H20Identify the total number of atoms of each element present in the following formulas: 3 AICl3 + 4 Al,(SO4)3 + 5 Al203 Aluminum (Al): Chlorine (CI): Sulfur (S): Oxygen (0):Why might increasing the temperature alter the rate of a chemical reaction? O The molecules will have a higher kinetic energy and bump into one another harder. C) none of the above 0 The molecules will more likely combine with other atoms at high temperature to save space. 0 The density decreases as a function of temperature and this leads to an increase in volume which drops the rate of reaction. 0 The molecules are less reactive at higher temperatures. Is the Elephant's Toothpaste activity exothermic or endothermic? How do you know? O Exothermic, because the temperature increases 0 Endothermic, because the temperature decreases O Exothermic, because the temperature decreases O Endothermic, because the temperature increases Fill in the missing coefficients to balance the following chemical equation: AI(OH) 3 => Al203 + H20 Note: We've discussed that a coefficient of '1' is generally not written. However, in cases such as this, go ahead and include a '1' (if applicable ) to show that you recognize there is one of the element/molecule present as a reactant or product.Fill in the missing coefficients to balance the following chemical equation: C2H5OH + 02 => CO2 + H20 Note: We've discussed that a coefficient of '1' is generally not written. However, in cases such as this, go ahead and include a '1' (if applicable) to show that you recognize there is one of the element/molecule present as a reactant or product.Fill in the missing coefficients to balance the following chemical equation: :0\" Note: We've discussed that a coefcient of '1' is generally not written. However, in cases such as this, go ahead and include a '1' (if applicable) to show that you recognize there is one of the elementfmolecule present as a reactant or product. What can you deduce about the activation energy of a reaction that takes billions of years to go to completion? How about a reaction that takes only fractions of a second? C) The slow reaction must have a low activation energy while the fast reaction must have a high activation energy. C) The activation energy of both these reactions must be very high. Q The activation energy of both these reactions must be very low. Q The slow reaction must have a high activation energy while the fast reaction must have a low activation energy. Given the following energy profiles, which of the following reactions results in a temperature decrease? coca R = reactants P = products 0 none of the above