energy (J) A B I Check the correct answer based on the graph above: Change in Enthalpy (delta H) Reactants Products Activation Energy C 4 points

Q: You have a 15.0 gram sample of gold at 20.0°C. How much heat does it take to raise the temperature…

A: Heat supplied, Q = msdt

Q: A student eats pasta to fuel her for the track competition the next day. As converted to energy,…

A: Law conservation of energy states that energy can neither be created nor destroyed.

Q: 54. Perform each conversion. (a) 345 Cal to kilowatt-hours (b) 23 J to calories (c) 5.7 × 10° J to…

A: Hi, since you have posted questions with multiple subparts we will answer first three subparts for…

Q: Hard water often contains dissolved Ca2 + and Mg2 + ions. One way to soften water is to add…

A:

Q: Classify each process as exothermic or endothermic.(a) dry ice subliming (changing from a solid…

A:

Q: Calculate the heat change in calories for freezing 40 g of water at 0 ∘C. Express your answer as a…

A: Initially the water is at 0˚C. Mass of water = 40 g ∆Hf of water = 79.72 cal/g

Q: Classify each change as exothermic or endothermic.(a) wood burning in a fire(b) ice melting

A: The given processes has to be classified as exothermic or endothermic.

Q: When 435J of heat is added to 3.4g of olive oil at 21-degrees Celsius, the temperature increases to…

A: With the absorption of heat, the temperature of the substance changes. The greater the heat…

Q: What is the specific heat capacity of the metal?

A:

Q: a ball has a kinetic energy of 106 J. If the ball is moving at a velocity of 2.51 m/s, what is the…

A: Since , Kinetic energy =1/2 mv 2 Where m = mass (in kg ) V= speed (in ms -1)

Q: How many grams of water at 100 c could be changed from liquid to gas if 4320 calories of heat were…

A: Here we have to use standard value of heat of vaporization of water. Using that value we can…

Q: When 305.2 calories of heat are added to 32.02 g of copper (specific heat capacity of 0.0920 cal/g…

A: The heat 'q' which is required to raise the temperature of a sample of mass 'm' having specific heat…

Q: * CI MeOH ? heat

A: The given reaction is an example of SN1 reaction, where carbocation can be formed as intermediate.…

Q: Whatis matter?

A: The objective of this question is to understand the concept of matter in the field of chemistry.

Q: NH2NH2 KOH heat

A: Step 1:Step 2:

Q: What are the 4 states of matter?

A: To identify: 4 states of matter.

Q: Copper wires used to transport electrical current heat up because of the resistance in the wire. If…

A:

Q: Explain the difference between heat and temperature. Does 1 L of water at 65°F have more, less, or…

A:

Q: A 40 g sample of water is raised 10oC, with water having a specific heat of 4.184 J/g*C, what amount…

A: Specific heat capacity: The quantity of heat energy required to raise the temperature of one gram of…

Q: Ethanol and gold each absorb the same amount of heat energy at room temperature. If ethanol has a…

A: As we know, amount of heat added is expressed as Q= mc ∆t Where Q=Amount of Head Added c =Specific…

Q: An iron nail with a mass of 12g absorbs 17 J of heat. If the nail was initially at 30 °C, what is…

A:

Q: calories

A:

Q: A 9.1 g piece of aluminum (specific heat= 0.22 cal/(g* Celsius) received 10.0 cal of heat. What was…

A: The change in temperature of an object on receiving certain amount of heat (q) is expressed as:

Q: Which of the following is a unit of energy? Mol Kelvin Btu Gram

A: Units are used to measure physical quantities such as time, length.

Q: The nutritional Calorie is equal to 10 calories.

A: Calorie: Energy is expressed in units of calorie. For the survive on the earth, human body requires…

Q: Find the final temperature of water given an initial temperature of 28 ˚ C, a mass of 8 g, heat (q)…

A: Initial temperature of water (T1) = 28°C Mass of water (m) = 8 g Heat absorbed (q) = 184 J Specific…

Q: Determine the Kinetic Energy done by a racquetball (40.0-gram) traveling at 134-mph. Convert to…

A: Solution: Given: m = 40 gram, v = 134mph Kinetic energy is a kind of energy the object have due to…

Q: Objects can possess energy as ________.            (a) endothermic energy          (b) potential…

A: Kinetic energy - Energy posses by an object by it's motion  Potential energy - Energy posses by an…

Q: Q5. Complete H3PO4 H,C CH3 Нeat ÓH

A:

Q: The water absorbed 7170 J and the calorimeter absorbed 380 J of energy. What is the heat change for…

A: Given Water absorbed heat = 7170 J Calorimeter absorbed heat = 380 J

Q: The specific heat of aluminum is 0.900j/g*C, how many joules of energy are required to raise the…

A: Specific heat : The amount of heat is required to raise the temperature of one gram compound by one…

Q: The temperature of 0.1 kg of water is to be raised from 10 degrees C to 90 degrees C. The energy (in…

A: Energy is required to raise the temperature of water from lower temperature value to higher…

Q: Copper wires used to transport electrical current heat up because of the resistance in the wire. If…

A:

Q: OH ОН OH PCC POCI3, pyridine

A:

Q: Calculate the kinetic energy of a 490. kg boat moving at a speed of 6.1 Round your answer to 2…

A: Given: Mass of boat = 490 kg  Speed = 6.1 m/s To find : Kinetic energy Solution  : There is a…

Q: How much energy (in calories) is required to raise 3 000kg water from 35.00C to 91.000 C (specific…

A: The mass of water = 3.000 kg = 3000 gThe initial temperature of water  The final temperature of…

Q: 1.42 (a) and (b)

A: 1 watt = 1 J/s 1 kWh = 1000 W X 3600 sec = 3600000 J

Q: An iron can weighing 50 grams absorbs 256.0 J of heat and warms by 11.4°C. What is the specific heat…

A: The given data contains, mass =50 g which absorbs 256 J. Temperature change =11.4°C

Q: Once he executes the daring jump out of the plane the skydivers energy is converted to what type of…

A: When we have velocity then the kinetic energy is considered.

Q: The specific heat of water is 4.18 J/g C. Would the specific heat of air expected be higher or lower…

A: It is the measure of the amount of energy required to raise the temperature of a unit mass of that…

Q: Which one of the following is not a physical property of a solid or liquid? A-compressible B-high…

A: there are  mainly three state of matter known as solid, liquid and gas .