When a 7.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 4.49 kJ · K-', the temperature decreases by 0.360 K. Calculate the molar heat of solution of KCl. kJ/mol AHsoln

Q: What was the initial temperature (in oC) of a 38.13 g sample of aluminum (specific heat = 0.900 J/(g…

A: Given :-  Mass of substance = 38.13 g  Specific heat = 0.900 J/g.K  Heat  = -1.077 kJ  Final…

Q: Define molar heat capacity. O the quantity of heat required to change a system's temperature by 1°C…

A: Molar heat capacity is defined as the quantity of heat required to raise the temperature of one mole…

Q: You heat approximately one cup (250 g) of water on the stove from 23 oC (~ room temperature) to 99…

A:

Q: is the amount of heat required to increase the temperature by 1.0 °C of a 1.0 g substance. O…

A:

Q: How many calories were absorbed by a reaction if the change in temperature of a 55 g solution was…

A: Given, mass of substance =55 g change in temperature =-5.6°C Specific heat capacity = 1.0 calg°C

Q: 10.5 g of solid ammonium nitrate are dissolved into a 100.0 g sample of water. The standard enthalpy…

A: Ammonium nitrate is a solid salt it can dissolve in the water .then it can ionise as ions  and AC as…

Q: 8. How much energy is released, when 45.0 g of methane is burned? AH for the reaction is -891…

A:

Q: A piece of gold (specific heat of 0.129 J/g oC) at 190 oC is placed in 165 mL of water. The initial…

A: The heat lost by the piece of gold is absorbed by water. The amount of heat absorbed by water can be…

Q: Give examples of instances or activities that require or produce energy. Where this energy came…

A: Please find the answers below.

Q: When a 7.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: Please answer completely with formula, given and complete solution so that i will understand. Tyms❤️…

A: In coffee cup calorimeter heat of reaction is given below.  qrxn=-m×Cs×(Tf-Ti) Where m is mass of…

Q: How many grams of C̟H, liquid must decompose according to the following chemical equation to…

A:

Q: How much heat must be absorbed to raise the temperature of 1.0 mole water from 0.0 °C to 25.0 °C?…

A:

Q: How much heat (q) is needed to increased the temperature of 10 grams of water by 15°C? Water…

A: Given: The heat capacity of water, (C) = 4.184 J/g°C The mass of water, (m) = 10 g. The change in…

Q: Consider the reaction: When a 10.0-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is…

A: The given reaction is : C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l)        ∆H=-1.37×103 kJ

Q: A chemist dissolved an 10.2g sample of KOH in 100.0 grams of water in a coffee cup calorimeter. When…

A:

Q: If the mass of a sample of Mg is 0.500 g and is placed in 100.0 g  of HCl, the heat gained is 546.5…

A: If heat is released then q will be negative and Heat is absorbed then q will be positive. Q= mC∆T…

Q: 49.85 grams of solid silver carbonate is dissolved in the calorimeter and the temperature goes from…

A:

Q: How much would the temperature of a 61.9 gram sample of grain alcohol increase if it absorbs 305…

A: Given the mass of alcohol is 6.19 grams heat energy Q=305 Joules Suppose the alcohol is ethanol ( As…

Q: Consider the balanced chemical equation: 2Al(s) + Fe2O3(s) -> 2Fe(s) + Al2O3(s) heat of reaction =…

A:

Q: Consider the following chemical reaction: C3H4(g) + HCl (aq) ----------> C3H6Cl2(g) 412 kJ/ mole…

A:

Q: Why were we not able to simply use the specific heat capacity of water, 4.184 J/g°C?

A: Given that: Volume of water used = 100 mL specific heat capacity of water = 4.184 J/g oC Change in…

Q: The molar heat of solution (AH,0ln) of sodium hydroxide is -445.1 kJ/mol. In a certain experiment,…

A: Molar heat of solution is defined as the energy released or absorbed per mole of solute being…

Q: Use Hess’ law to calculate the heat (kJ) of reaction, qrxn (kJ) when 12 g of solid calcium chloride,…

A: Given- Mass of CaCl2 = 12 g ΔH°f CaCl2 (s) =  -795 kJ/mol To find- qrxn in (kJ) by using Hess’ law…

Q: What quantity of heat (in kJ) will be released if 0.3387 mol of NH3 are mixed with 0.200 mol of O₂…

A: The limiting reagent in a chemical reaction is a reactant that is totally consumed when the chemical…

Q: Which of the following processes always results in an increase in the energy of a system? O The…

A: Which of the following processes always results in an increases in the energy of a system has to be…

Q: A certain reaction has ∆?°= -19.5KJ and ∆S°= 42.7 J/K, is the reaction exothermic or endothermic?

A:

Q: What is the heat of solution for compound X

A:

Q: How much heat is required to raise the temperature of 1.5 x 103 g of water from 45F to 130.F? The…

A: The temperature conversation formula is

Q: What is the definition of enthalpy? O a. Heat flow in a chemical reaction at constant temperature O…

A: Enthalpy is Heat flow in a chemical reaction at constant pressure.

Q: A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2…

A: a. Given:

Q: A chemist dissolved an 10.8-g sample of KOH in 100.0 grams of water in a coffee cup calorimeter.…

A: Here we are required to find the enthalpy of solution of KOH in the unit of kJ/mol

Q: Consider the data about gold metal in Exercise 5.26(b).(a) Based on the data, calculate the specific…

A: a.

Q: How much energy is removed from 500.0 g of liquid water when the temperature is lowered by 1.10 deg…

A: We know that : Q = mC∆T ...(1)  Here, Q = kJ, m = mass of water = 500 gm, C = heat capacity of water…

Q: If 50.0 g of water change in temperature from 22.5 to 25.4 deg C and the specific heat capacity of…

A: Amount of heat required is given by, q =m.c.∆T where q is the heat required, m is the mass, c is the…

Q: The enthalpy for the formation of 1 mole of NH3(aq)NH3(aq) is -80.29 kJ/molkJ/mol. What is the…

A: The standard molar enthalpy of formation is defined as the standard change in enthalpy for the…

Q: An exothermic reaction liberates 7.58 kJ of heat in a coffee cup calorimeter containing 157 grams of…

A: A 157 grams solution has a specific heat of 4.184 J/g ◦C and temperature of the solution is…

Q: A 80.8 g chunk of granite (specific heat: 0.79 J/g°C) is heated to 225.7 °C and dropped into a…

A:

Q: What is meant by the term standard conditions with reference to enthalpy changes?

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

Q: How much energy, in J, is required to raise the temperature of 1 kg of water from 37oC to 39.5oC?…

A: Given, The energy, in J, is required to raise the temperature of 1 kg of water from 37oC to 39.5oC…

Q: The enthalpy changes when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 135 mL of…

A: We'll calculate the maximum temperature reached by the resulting solution. 135 ml of 0.250M HI and…

Q: The enthalpy changes when a strong acid is neutralized by strong base is –56.1 kJ/mol. If 135 mL of…

A: So we will calculate the maximum temperature reach by the solution.

Q: onsider the following reaction.  N2 + 3 H2 -> 2 NH3        ΔH = -92 kJ/mol If 35 g of NH3 are…

A:

Q: 15. The enthalpy change CH,(g) + 20,(g) → CO,(g) + 2H,O(1) breams is -891 kJ for the reaction as…

A: Given :

Q: How much heat is evolved when 8.89x10° g of ammonia is produced according to the following equation?…

A:

Q: A 87.9 g chunk of limestone (specific heat: 0.22 J/g°C) is heated to 231.9 °C and dropped into a…

A: Mass of limestone (m) = 87.9 g Specific heat of limestone (c) = 0.22 J/g.°C Initial temperature (Ti)…

Q: 4. Determine the final temperature of water if 9.2 kJ of heat is added to 250 mL of 17°C water (the…

A:

Q: Consider the following reaction: 2CH3OH (g) 2CH4 (g) + 02 (g) AH = 252.8 kJ. Atomic weights: C = 12…

A:

Q: When 7.474 g of NaCl is dissolved in 120 grams of water at 22 oC in a coffee-cup calorimeter, 500J…

A: we are given that NaCl dissolves in water heat absorbed by the solution=500J so heat released by the…

Q: 1.15 g of LiCl (42.39 g/mol) is dissolved in 25.0 g H2O in a constant-pressure calorimeter and the…

A: Given that 1.15 g LiCl was dissolved in 25.0 g water. Number of moles can be calculated from the…