Using the graph which reaction had a negative change in temperature and is it endothermic or exothermic? Which reaction took place at a greater rate? Which reaction is exothermic

Q: 1. This reaction was done in a coffee cup calorimeter.  The total mass of water in the coffee cup…

A: 1) Mass of water = 120 g Specific heat of water = 4.184 J/g oC Change in temperature = 41 - 17.5=…

Q: Conside 'pothetical chemical reaction: A+B → C+D (In this equation A, B, C and D stand for some…

A:

Q: Why is that the surrounding temperature of ice cubes is cold and has condensation? What process…

A: In this problem we are required to explain why the temperature around the ice cubes are cold and why…

Q: D. Reaction Coordinate B. A. Potential Energy

A: Answer :- D  The letter represents the energy of the products is D.…

Q: energy threshold

A: Threshold Energy is the minimum energy that the molecules must have in order to bring about…

Q: Calculate H for the reaction 1 N2(g) + 1 O2(g) → NO(g) 22 given the following information: As…

A: The enthalpy of a reaction is the amount of heat gained or released during the course of a reaction.…

Q: When reversing the direction of a reaction that has a change in enthalpy of 80 kJ you must: double…

A: enthalpy of a reaction is accompanies the change is enthalpy when reversing the reaction. suppose.…

Q: When hot tea is poured into both a steel cup and a styrofoam cup, the steel cup quickly feels hot to…

A: Since metal is a good conductor of heat due to free electrons in the metal.

Q: Evaluate each pair of statements and choose from the following which condition is applicable:…

A: A multiple choice question based on general chemistry that is to be accomplished.

Q: Exothermic Reactions: Reactants= products + ______

A: • Exothermic reaction is a chemical reaction that  releases   energy in the form of heat or light.…

Q: e the jy diagram to answer these questions. What is the heat of reaction? Is the reaction exothermic…

A: Heat of the reaction is -50 KJ/mol. Reaction is exothermic.

Q: Consider a burning candle. Reactants are the chemicals that are present before a reaction occurs…

A:

Q: Decide whether each of these reactions is exothermic or endothermic. 1. When two chemicals mix their…

A: An exothermic reaction is one that is associated with the evolution of energy (usually in form of…

Q: thermometer- A 56.0 g sample of aluminum is put into a calorimeter (see sketch at right) that…

A: When aluminium sample which is at higher temperature is put in calorimeter which is having water at…

Q: What is an exothermic reaction? The energy of the reactants is lower than the energy of the…

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Q: The combustion of fuels (coal, oil, gasoline) are exothermic reactions. Why?

A: The reason why combustion of fuels are exothermic has to be explained.

Q: D. Enthalpy is negligible B. Enthalpy change is negative 7. Which represents an exothermic reaction?…

A: The change in enthalpy of a reaction the amount of heat gained or released during the course of a…

Q: Assuming constant pressure, rank these reactions from most energy released by the system to most…

A: The objective of the question is to rank the given reactions based on the amount of energy released…

Q: 7. The reaction below takes place at constant pressure in a container with a variable volume such as…

A: Answer: Given chemical reaction is a combination reaction where 2 iodine atoms are combining…

Q: The enthalpy of reaction is −2202.0 kJ/mol. How much energy (in joules) will be released if 61.95…

A: Energy released = number of moles × molar enthalpy of combustion

Q: 20. Dissolving the salt potassium nitrate in water is an endothermic reaction. What would be…

A: The dissolution of potassium nitrate salt in water is an endothermic reaction. As the potassium…

Q: 1

A: According to the equation;

Q: to 19.8 °C. Which statement is correct? 4. A chemical reaction is carried out in a coffee cup…

A: Here we are required to find the statement which is correct.

Q: When sodium chloride (NaCl) dissolves, it absorbs 3.9 kJ/mol. What energy diagram would accurately…

A: Endothermic reaction :-       The reactant absorb heat energy during the reaction is called…

Q: A scientist wants to perform a reaction in a vacuum chamber to control the experiment as much as…

A: Since experiment is performed in the vacuum it means their exist no medium and he wants to determine…

Q: exothermic and has a negative enthalpy

A: For given question four options are given.

Q: For exothermic reactions,the products have lower energy than reactants. explain why

A: The question is based on the concept of chemical thermodynamics. we have to explain why products…

Q: Energy, and Reaction Rates 25 pts st: Heat, Energy, and Reaction Rates Answered ✓ SKETCHPAD Question…

A: Thank you,Please rate my response.

Q: Two portions of 50.0 g of water, at 13.0 and 54.0 °C, respectively, were mixed inside a cup…

A: we have to tell which option is correct

Q: can you explain why energy must initially be consumed in an exothermic chemical reaction?

A: Exothermic reactions are those reactions which release energy in the surroundings due to the…

Q: Certain chemical reactions are endothermic while others are exothermic. In each of the following…

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Q: are the products are the things that are mixed together to start a reaction?

A: A chemical reaction is a process in which one, two, or more substances are converted into another…

Q: heat content in the surroundings of an endothermic reaction decreases, because the energy contained…

A: During an endothermic reaction, heat is absorbed during the reaction. ∆H° =…

Q: 4. The specific heat of water is quite high at 4.184 J/gC. Explain how life on this planet would be…

A: The amount of heat required to increase the temperature of the 1 g of the substance by 1 degree is…

Q: an 33.777g piece of metal is heated in a hot water bath at 98.5°C and then cransferred to a…

A: Given, mass of metal, m =33.777 g temperature of hot water bath T1 =98.5°C Volume of water in coffee…

Q: 21. Which device to nutritionists use to determine the number of calories in samples of food? a foam…

A: Nutritionists use a bomb calorimeter, which is abox with two chambers, one inside the other, toburn…