OCHEMICAL REACTIONS Calculating the heat of reaction from molar reaction enthalpy a... A chemist measures the energy change AH during the following reaction: 2 NO2(g) N204(g) AH = -55.3 kJ Use the information to answer the following questions. endothermic. This reaction is... x10 exothermic. Yes, absorbed. Suppose 70.1 g of NO, react. ? Yes, released. Will any heat be released or absorbed? No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. kJ Round your answer to 3 significant digits. X II

Q: Convert between energy units. a. 231 cal to kJ b. 132 x 10* kJ to kcal d. 2.88 x 10* J to Cal c.…

A: Convert between energy units. (a) 231 cal to kj (b) 132 × 104 kj to kcal (c) 4.99 × 103 kj to kWh…

Q: Use the References to access important values if needed for this question. In the laboratory a…

A: Given Mass = 13.9 g Temperature difference = 40-24.3 = 15.7°C Heat (Q)  = 28.2 J

Q: e shows the number chemical Change C cal Reaction Read of the following state hemical reaction A, b…

A: Types of chemical reaction 1. Chemical combination reaction or synthesis reaction 2. Chemical…

Q: energy

A: Dear student I have given answer to your question in the image format .

Q: please help with this question

A:

Q: 1. Chemical potential energy is found in the. between atoms and is transformed into energy during…

A: Specific heat of Fe = 0.451 J/g degC Specific heat of Pb = 0.129 J/g degC

Q: As the temperature of a gas is increased, the average kinetic energy of its molecules O a decreases…

A: Average kinetic energy of the gas molecule is directly proportional to the temperature

Q: Use the image to answer the question. Which kind of reaction is shown in this image? 1 point warm…

A: It is an endothermic reaction because the system takes energy from the surroundings.Explanation:The…

Q: Is freezing an exothermic process or endothermic process? Explain how you are experimentally…

A: Freezing is an exothermic process.

Q: Consider a hypothetical chemical reaction: A+B C+D (In this equation A, B, C and D stand for some…

A: We have to fill the given table using the energy diagram of the reaction

Q: The specific heat of silver is 0.24 J g*C. How many jules of energy are needed to arm 4.37 g of…

A: Given, Specific heat = 0.24 J/g°C m = 4.37 g Final temperature, Tf = 27.5°C Initial temperature, Ti…

Q: A metal sample weighing 123.00 grams and at a temperature of 97.6 degrees Celsius was placed in…

A: Given,A metal sample of weight 123.00 g at a temperature of 97.6oC is placed in 40.00 g of water at…

Q: Which of the following is true about enthalpy changes when a salt dissolves in water? a) if the…

A: To solve this problem we have to know about the enthalpy change of resulting solution made by…

Q: Calculate the number of joules in calories 258 calories =? JOULES 9740 J = ? CALORIES  PLEASE…

A: The energy is measured using units such as Calorie and Joules. The relation between Calorie and…

Q: The energy stored by a body by virtue of its position or chemical composition is termed A) kinetic…

A: Kinetic energy: The energy stored by a body by virtue of its position Potential energy: The energy…

Q: Please select the incorrect assertion from the following: A. Heat is energy that is transferred as a…

A: Temperature is a physical quantity. It measures the hotness and coldness of a system.

Q: Enter a balanced chemical equation for the reaction of aqueous potassium hydroxide with aqueous…

A: Double displacement reaction :- A chemical reaction in which exchange of ions between two reacting…

Q: A reaction known to be endothermic was performed in a beaker. Which observation would best support…

A: Given, A reaction known to be endothermic was performed in a beaker the best observation for this…

Q: Heat Evolved (J) 50 45 40 35 30 20 15 10 S Relationship Between Amount of Reactant and Energy ° 10…

A:

Q: Section 5.8 Energy and Reactions 10. In hot weather dogs pant and humans sweat. Is the panting…

A: Given: In hot weather dogs pant and humans sweat. To explain: Is the panting process which dogs'…

Q: If the mass of the hot water is -67.46 and initial temperature of hot water is 51.0 and mass of cold…

A: First, the amount of heat absorbed by the cold water is determined.

Q: If 115 cal are added to 49.2 g of solid iron, what is the change in temperature of the iron? The…

A: The objective of this question is to calculate the change in temperature (ΔT) of the iron when a…

Q: How much heat, in joules and in calories, must be removed from 2.13 mol of water to lower its…

A: Given information is as follows: The number of moles of water = 2.13 mol The initial temperature…

Q: When 435 J of heat is added to 3.4 g of olive oil at 21°C, the temperature increases to 85°C. What…

A:

Q: what is the specific heat of something that goes from 23.6 degree celcius to 33.7 degree celcius…

A: Using conservation of energy equation   Q=mC∆twhereQ=heat energy m=mass of substanceC=specific heat…

Q: Statement A: Heat is absorbed by the surroundings from the system in an exothermic process.…

A: Answer  Statement A Heat is absorbed by the surrounding from the system is…

Q: 1. VOCABULARY – Correct each incorrect sentence by changing only the underlined words. 1.…

A: The corrected statement are as follows:1. Temperature is the average molecualr KE and internal…

Q: A volume of 80.0 mL of H20 is initially at room temperature (22.00 °C). A chilled steel rod at 2.00…

A: Given : Volume of water = 80.0 mL Initial temperature of water = 22.00 oC Final temperature of water…

Q: This topic is about endothermic and exothermic process. Why do you think volatile substances, like…

A: In this question, we want to discuss about cooling effect of volatile substances like acetone and…

Q: potential energy Ethanol Oxygen Carbon dioxide .steam Use the graph above to explain if the…

A: The change of energy of reaction occurs at constant pressure is called enthalpy of reaction.

Q: Which type of reaction is shown in the energy diagram below? O Kinetic energy of water molecules…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: only water transferring energy to creating energy in increases endothermic slow down exothermic…

A:

Q: Water droplets condensing on the inside of a window on a cold day. Is this process exothermic or…

A: Exothermic Reaction :- The loss of heat during the reaction contain reactants concerted into product…

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: Energy being absorbed in a substance that causes it to get cooler is known as what type of reaction?…

A: Solution All chemical processes area unit in the midst of energy changes. once a reaction takings,…

Q: Please help me

A: Answer is explained below, hope you like it. Ans:- The enthalpy of dissolution of CuSO4 is -73.75…

Q: What is the AH value for an exothermic energy change? * Always negative Always positive Could be…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed…

Q: A plant carries out photosynthesis. System: Direction of energy transfer: (endo or exothermic)

A: The solution is given below -

Q: You put a pot of water on the stove and the water begins to boil. System: Surrounding: Direction of…

A: Exothermic reaction are those reaction in which heat is evolved while reaction in which heat is…

Q: Carbon atoms entering the flame are part of Organic molecules The flame needs oxygen because it is…

A: Interpretation - To complete the story with the help of given words.