Objects can possess energy as (a) endothermic energy (b) potential energy (c) kinetic energy O a only O b only O conly O a and c O b and c

Q: The change in the energy between a chemical reaction and the surroundings at constant temperature is…

A: Dear Student

Q: a sample of ammonia (NH3) Liberates 5.59 KJOF heat as it solidifies at its meining point Whar is the…

A: Given : Amount of heat liberated = 5.59 KJ And the heat of fusion of ammonia = 5.66 KJ/mol.

Q: the initial temperature of a 10.00 mL sample of water was 80o C and its final temperature is 21oC,…

A:

Q: A lead fishing weight with a mass of 57 g absorbs 146 calof heat. If its initial temperature is…

A: The given data contains, mass = 57 g. Heat Q = 146 cal. Initial temperature = 47°C

Q: What is the specific heat capacity of a substance if it takes 8.7 kJ of heat to warm 484.4 g by 39.1…

A:

Q: 2. Select the incorrect statement. A) B) C) D) w is positive when work is done on the system w = PAV…

A: Select the incorrect statement from the following :  A) w is positive when work is done on the…

Q: A 55.0kg sample of an unknown metal X requires 675kof energy to heat it from 25.0 to 118.0C. What is…

A: The mass of an unknown sample is 55.0 kg. The initial temperature is 25.0˚C. The final temperature…

Q: A gas is compressed from an initial volume of 5.55 L to a finalvolume of 1.22 L by an external…

A: The expression for the work done,  W=-P(Vf-Vi)W=-1.00 atm (1.22 L-5.55 L)W=4.33 L (101.33 J)1 L…

Q: C (s) + 02 (g) → CO2 (g) AH° = -393.5 kJ Calculate the heat change if 2.54 g of C is reacted.

A: The given reaction is: C(s)+O2(g)→CO2(g)       ∆H°=-393.5 kJ Calculation of no. of mol of C: No. of…

Q: If 1.45 L of water has an initial temperature of 25.0oC, whatis its final temperature after…

A: Given that : The volume of water(V) = 1.45 L Initial temperature(T1) = 25°C°C Heat energy = 9.4 x…

Q: 1. Select the incorrect statement. q is the symbol for heat q = mC;AT The unit for g is Joules q is…

A:

Q: In a calorimetry experiment, ice was added to warm water. Given the following data collected during…

A: In a calorimetry experiment, the goal is to measure the heat exchange in a chemical reaction or a…

Q: aluminum is 0.900 ? ?∙°C; 25.316 g of aluminum is placed in 99.134 g of water at a starting…

A: Heat(q) = m.s.□T where,  m = mass s = specific heat capacity  □T = Temperature difference  Using…

Q: All moving objects have Kinetic Energy. O True O False

A: we know that Kinetic energy is determined by the equation 0.5•m•v2.

Q: Which of the following statements are true? AH for an endothermic reaction is positive AH for an…

A: The objective of the question is to identify the statements that are true.

Q: If 25.0 kJ of heat are given off when 2.9 g of HCl condenses from vapor to liquid, what is AHcond…

A: Given that: HCl(g) ...> HCl(l) dH = -25.0KJ upon 2.9 g of HCl

Q: C (s) + 02 (g)- CO2 (g) AH° = -393.5 kJ Calculate the heat change if 2.54 g of C is reacted.

A: Given information, ∆H° ( for 1 mole of C(s)) = -393.5 kJ Mass of C(s) reacted = 2.54 g Molar mass of…

Q: Which region of the following heating curve represents AHusion ? Heat Added O a Temperature

A: The plot of temperature versus heat is known as heating curve

Q: In a given gaseous reaction, 72 J of heat is absorbed and AE = -442 J. (a) Calculate w (work). work…

A: First law of thermodynamics  When heat absorbed by a system  Q=∆E+W Q=heat absorbed by a system…

Q: For this question, is this an endothermic or exothermic reaction? I am confused at the part where…

A: We will use first law of thermodynamics

Q: How much heat is required to raise the temperature of 10.0 g of H2O (s) from -10 degrees C to H2O…

A:

Q: The internal energy of a gas changes from 12 calories to 15 calories when 8 calories of heat is…

A: Welcome to bartleby !

Q: Which of the following is true    a. when the system absorbs heat, q is positive, the system…

A:

Q: Which one of the following is an endothermic process? A) ice melting B) Hydrochloric acid and barium…

A: Ans - C both ice melting and boiling soap  In a reaction if heat release it is exothermic process or…

Q: ΝΗ 1) exess H3C-I and K₂CO3 2) Ag₂O, heat

A: When amines are treated with excess of methyl iodide, CH3I in the presence of K2CO3 (base) undergo…

Q: 16) Which of the following is an exothermic process? A) condensation of water vapor B) Ammonium…

A: Exothermic process is a process in which energy get released during the course of reaction and the…

Q: .The specific heat of ethyl alcohol is 2.45J / g°C and that of silver is 0.235J/g°c. Therefore,…

A:

Q: A chemical reaction (or other process) warms up its container as it happens. The heat for such a…

A: The heat of a system is negative, if heat is released in the system and positive, if heat is gained…

Q: List some examples of kinetic energy.

A: Kinetic energy could be defined as the energy that is found in objects that are moving. The energy…

Q: Calculate the energy required to heat 673.0 g of ethanol from -1.6 °C to 14.7 °C. Assume the…

A: Energy required to raise the temperature of body of unit mass to one degree Celsius is known as…

Q: Question 19 Which of the following does NOT describe an exothermic chemical reaction? O The…

A:

Q: The delat H for the solution process when solid sodium hydroxide dissolves in water is -44.4 kJ/mol.…

A: Given: Mass of water = 250.0 g. Mass of NaOH dissolved = 10.1 g. Initial temperature of the solution…

Q: What is the distinction between temperature and thermal energy is a system?

A:

Q: A 402 g sample of silicon is subjected to a temperature change of -800.29 K while releasing 228980…

A: Heat released by the material = mass × specific heat capacity ×temperature change Where, heat…

Q: The Aq of a system that releases 12.4 J of heat to surroundings is O 12.4 J O -12.4 J Not enough…

A: The objective of the question is to determine the change in heat (Δq) of a system that releases 12.4…

Q: If 15.0 kJ of heat are given off when 1.6 g of HCl condenses from vapor to liquid, what is AHcond…

A: The amount of heat given off is = 15.0 kJ The amount of HCl condensed from vapour to liquid is = 1.6…

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: :Example of a state function is .A 5 I to ED AU .B ΔΗ AS .D All

A: The solution of the given question is

Q: If 756 cal of heat were added to 64.8 g of AL at 32.5 C, what is the final temperature of the…

A: