When 30mL of 1.18 mol/L H2SO4(aq) and 40mL of 1.27mol/L HCOOH(aq) are mixed in a simple calorimeter, the temperature rises by 5.07 degrees celsius. Calculate the enthalpy change that occurs in the chemical system. The answer should be written in the form a.bc kJ

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 174. kJ during a…

A:

Q: In an experiment, a 1.3440 g sample of dimethyl oxalate (C4H6 O4) is burned completely in a bomb…

A: The objective of this question is to calculate the molar heat of combustion of dimethyl oxalate…

Q: In this experiment you will place a sample of your FeCl2 in water in a constant pressure calorimeter…

A: Heat is a form of energy that is exchanged between various temperature environments or objects…

Q: When 1.31 g of KClO3 was added to 138.34 g of water in a calorimeter, the  temperature dropped by…

A: mass of KCIO3 = 1.31 g mass of water = 138.34 g Temperature dropped = 0.506 °C Heat capacity of H2O…

Q: When 15.3 g of sodium nitrate, NaNO3, was dissolved in water in a constant-pressure calorimeter, the…

A:

Q: In a laboratory investigation into the neutralization reaction; HNO3(aq) + NaOH(s) - NaNO3(aq) + H₂O…

A:

Q: A 1.922-g sample of methanol (CH3OH; molar mass 32.04 g/mol) is burned in a constant-volume bomb…

A:

Q: When 50.0 mL of 1.79 M of HCl(aq) is combined with 50.0 mL of 1.89 M of NaOH(aq) in a coffee-cup…

A:

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 153. kJ during a…

A: According to the first law of thermodynamics, the total heat change of a system at constant pressure…

Q: A student was asked to determine the enthalpy of solution of KclO3 in water using Styrofoam…

A:

Q: Dissolving 3.0g of CaCl2 in 150.0g of water in a calorimeter at 22.4oC causes the temperature to…

A: Given,  Mass of CaCl2 = 3 g  Molar mass of CaCl2 = 110.98 g/mol Mass of Water, m = 150 g  Initial…

Q: n your Heat of Neutralization experiment, you will mix 25.0 mL of 1.0 M NaOH(aq) with 25.0 mL of 1.0…

A: The number of moles (n) of a solute present in V mL of C (M) solution is calculated using the…

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 209. kJ during a…

A: Decrease in Energy of gaseous reactant  = ∆E = -209 kJ Work done = -104 kJ Change in enthalpy of gas…

Q: When 50 mL of 0.100 M AgNO3 is combined with 50 mL of 0.100 M HCl in a coffee-cup calorimeter, the…

A: YOu need to know that both solution are aq and the volume is additive in nature. the Heat absorbed…

Q: A gaseous fuel mixture contains 24.2% methane (CH4), 40.5% ethane (C₂H6) and the rest propane (C3H8)…

A: Given, Methane (CH4) = 24.2 %Ethane (C2H6) = 40.5 %Propane (C3H8)=35.3 %

Q: A 1.00 g sample of the rocket fuel hydrazine (N2H4) is burned in a bomb calorimeter. The temperature…

A: Given, Mass of sample = 1.0 g The initial temperature, T1 = 24.62 oC. Final temperature is T2 =…

Q: what is the initial temperature of the water

A:

Q: The reaction of zinc with hydrochloric acid is represented by the reaction Zn(s) + 2 HCl(aq) ↔ ZnCl…

A: Q = m . s . (T2 - T1) Where, Q = heat absorbed/liberated, m = mass of substance, s = specific heat…

Q: Suppose 3.60 g of K₃PO₄ (FW = 212.3 g/mol) and excess CaCl₂ are mixed in 115 g of water in a…

A: Given: mass of K₃PO₄ = 3.60 g molar mass of K₃PO₄ = 212.3 g/mol mass of water = 115 g change in…

Q: A student is attempting to determine the heat capacity of a Styrofoam cup calorimeter by pouring hot…

A: Given: Cold Water : Mass = 21.2455 g                       Initial Temperature = 20.36oC…

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 374. kJ during a…

A: