2. If the temperature rises from 18.7 °C to 25.2 °C when 1.988 g of MgO pellets are added to 199.0 mL of 2.0 M HCI , determine the heat of reaction ( q ). The density of the MgCl2 solution is 1.02 g/mL and the specific heat capacity of the solution is 3.93

Q: Consider the dissolution of CaCl₂: CaCl₂(s) → Ca²⁺(aq) + 2Cl⁻(aq) ∆H = -81.5 kJ/mol A 15.0-g sample…

A: The mass of CaCl2 is 15.0 g. The mass of water is 145 g. The initial temperature of both water and…

Q: When 1.81 g of zinc metal reacts with 100.00 g of 1.00M HCl in a coffee-cup calorimeter, the…

A: Zinc metal reacts with Concentrated HCl is an exothermic reaction(heat produced) thus temperature…

Q: A 2.817 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

A: Given, Mass of sample = 2.817 g Temperature increases from 23.97◦C to 29.14◦C Heat capacity of…

Q: A 4.00-g sample of rocket fuel was combusted in a bomb calorimeter according to the following…

A:

Q: A sample of toluene undergoes combustion in a bomb calorimeter that is insulated by 814 g of water…

A: Given: Mass of water = 814 g. Heat capacity of calorimeter = 1015 J/oC And the increase in the…

Q: A 25.0 mL sample of 1.0 mol/L aqueous solution of hydrochloric acid, HCl(aq), was mixed with 25.0 mL…

A: Heat energy, also known as thermal capacity, is a physical property of matter that is defined as the…

Q: In an endothermic process, heat is ____________ (released/absorbed).  In an exothermic process, heat…

A: Here I attempt only first question (Question-1) because there are two many questions and according…

Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

A: The formation of hydrogen fluoride from hydrogen gas and fluorine gas is expressed as, H2g+F2g→2HFg…

Q: The white pigment TiO2 is prepared by the reaction of titanium tetrachloride, TiCl4, with water…

A:

Q: A calorimeter contains 23.0 mL of water at 14.5 °C . When 2.20 g of X (a substance with a molar mass…

A:

Q: A 30.0 g sample of water at 280. K is mixed with 30.0 g of iron at 330 K. The final temperature of…

A:

Q: In a constant‑pressure calorimeter, 70.0 mL of 0.850 M H2SO4 was added to 70.0 mL of 0.270 M NaOH.…

A: The reaction taking place between H2SO4 and NaOH is as follows:

Q: How much heat (in kJ) is needed to raise the temperature of 100.0 grams of water by 25.0 °C?  The…

A: Mass of water(m) = 100 gm  specific heat capacity of water(s) = 4.184 J/g·°C  Increase in…

Q: What is the ΔHsoln for KF?

A:

Q: In a constant-pressure calorimeter, 65.0 mL of 0.800 M H,SO, was added to 65.0 ml. of 0.500 M NaOH.…

A:

Q: The value of AH° for the reaction below is 128.1 kJ CH ,OH U - Co, 2(8) + 2H. 2(8) How may kJ of…

A: Given chemical equation is  CH3OH(l) -----> CO2(g) + 2H2(g) Enthalpy change, ∆H° = 128.1 kJ  We…

Q: 3. In an experiment, 5.260 g of potassium hydroxide is mixed with a dilute solution of hydrochloric…

A:

Q: When 110. g of water at a temperature of 22.3 °C is mixed with 65.9 g of water at an unknown…

A: The final temperature is achieved at equilibrium. According to law of conservation of energy, the…

Q: When a 4.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given,4.00 g sample of KBrTotal heat capacity of 3.04 kJ K-1.The temperature decreased by 0.220…

Q: When 4.51 g of a solid mixture composed of NH¼CI and CaCI2 was dissolved in 100.0 mL of water, the…

A:

Q: A sample of nickel is heated to 99.8°C and placed in a coffee-cup calorimeter containing 150.0 g…

A: The equation used to calculate heat released or absorbed follows:        ......(1) where, q = heat…

Q: In a constant-pressure calorimeter, 50.0 mL of 0.320 M Ba(OH), was added to 50.0 mL of 0.640 M HCI.…

A: The enthalpy change of reaction is calculated with the help of the heat energy absorbed or released…

Q: When a reaction occurs in a calorimeter, the temperature of 100 g of a reaction mixture increases by…

A:

Q: When 4.81 g of a solid mixture composed of NH4CI and Cačl2 was dissolved in 100.0 mL of water, the…

A: Please find your solution below :

Q: A calorimeter contains 20.0 mL of water at 14.5 ∘C . When 1.20 g of X (a substance with a molar mass…

A: From the given information, we can calculate the mass of water (solvent) and the mass of the…

Q: In a constant-pressure calorimeter, 60.0 mL of 0.300 M Ba(OH), was added to 60.0 mL of 0.600 M HCI.…

A: The balanced reaction taking place can be written as, => 2 HCl (aq) + Ba(OH)2 (aq) --------->…

Q: When 108 g of water at a temperature of 23.1 °C is mixed with 66.1 g of water at an unknown…

A:

Q: The

A: We will calculate ∆H

Q: In a constant-pressure calorimeter, 50.0 mL of 0.340 M Ba(OH), was added to 50.0 mL of 0.680M HCI.…

A:

Q: A calorimeter contains 27.0 mL of water at 11.5 °C. When 1.30 g of X (a substance with a molar mass…

A: X(s) + H2O(l) --> X(aqm = 1.30 gM = 82

Q: A 1.231 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

A:

Q: A calorimeter contains 30.0 mL of water at 14.0 °C When 1.70 g of X (a substance with a molar mass…

A: Given: Mass of X dissolved = 1.70 g. Molar mass of X = 76.0 g/mol. Initial temperature of solution =…

Q: Why did you use 4.184 J/goC as the specific heat capacities of the solutions? a. Because all kinds…

A: Specific heat capacities of the solutions = 4.184 J/g oC

Q: A 1.000 g sample of the rocket fuel hydrazine (N2H4; molar mass = 32.04 g/mol) is burned in a bomb…

A: Mass of N2H4 = 1.000 g Molecular weight of N2H4 = 32.04 g/mol Number of moles of N2H4 = mass/mol.wt.…

Q: A 2.673 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

A: Tf = 28.80°C  Ti = 25.03° C ΔT = Tf - Ti = 28.80° C - 25.03 ° C                                =…

Q: A 25.0 mL portion of dilute HCl (aq) is combined with a 25.0 mL portion of dilute NaOH in a…

A: Given that : The volume of HCl = 25.0 mL The volume of NaOH = 25.0 mL The initial temperature = 23.3…

Q: A calorimeter contains 35.0 mL of water at 13.0 °C. When 1.80 g of X (a substance with a molar mass…

A: Given,The volume of water = 35.0 mLSo, mass of the water will be = (35.0 mL x 1.0 g/mol) = 35.0 g =…

Q: In a constant-pressure calorimeter, 55.0 mL of 0.300 M Ba(OH), was added to 55.0 mL of 0.600 M HCI.…

A: Given, Ba(OH)2 taking part in reaction = 55.0 mL of 0.300 M HCl taking part in reaction = 55.0 mL of…

Q: When 50.0 mL of 1.24 M of HCI(aq) is combined with 50.0 mL of 1.32 M of NaOH(aq) in a coffee-cup…

A:

Q: When 5.54 g of a solid mixture composed of NH.Cl and CaCl2 was dissolved in 100.0 mL of water, the…

A:

Q: In a constant‑pressure calorimeter, 55.0 mL of 0.340 M Ba(OH)2 was added to 55.0 mL of 0.680 HCl.…

A: Heat absorbed in a reaction calculated using the following relation. Q=mC△T Q-Heat absorbed m-Mass…

Q: Instant hot packs contain a solid and a pouch of water. When the pack is squeezed, the pouch breaks…

A: The reaction is given below.LiCl (s)  -->  Li+(aq) + Cl−(aq)         ΔH=  −36.9kJHeat of reaction…

Q: During an experiment, a student adds 1.05 g of calcium metal to 200.0 mL of 0.75 M HCI. The student…

A:

Q: Heat released by the reaction, qrxn (J) Use the equation qrxn = –msoln×Csoln× ΔTsoln. Assume the…

A: Given,  Initial temperature = Ti = 25.00 °C  Final temperature = Tf = 31.37 °C  Change in…

Q: The temperature of 127.4 g of water rises from 18.6 °C to 30.9 °C when 0.1000 mol of H+ is reacted…

A: Mass of water, m =127.4 g Initial temperature, T1=18.6 °C Final temperature, T2=30.9 °C Temperature…

Q: A 4.70-g sample of aluminum pellets (specific heat capacity = 0.89 J °C- g) and a 10.00-g sample of…

A: Since the heat lost by both metals will be used in increasing the temperature of the water  Q = mCΔT…

Q: When 5.28 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the…

A:

Q: The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (ca. 2500 °C)…

A: The question is based on the concept of chemical thermodynamics. first, we have to identify what is…