how much heat energy was required to dissolve the sample of KOH

Q: Adding 5.47 g of to 140 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt)…

A: According to the question, we are adding 5.47 g of NH4NO3 to 140 g of water in a coffee-cup…

Q: A 2.00 g sample of a salt (MX(s)) is added to 20.0 g of water at 22.0 °C in a calorimeter. The…

A: Given that, a 2.00 g of a sample of a salt MX(s) is added to a 20.0 g of a water at 22.0oC. So, the…

Q: 55.0 g of NaOh is added to a coffee cup calorimeter containing 812 mL of 1.10 M Hbr, changing the…

A: Given information,Mass of NaOH is 55.0 g.Volume of HBr is 812 mL and concentration is 1.10…

Q: A generic solid, X, has a molar mass of 61.8 g/mol. In a constant-pressure calorimeter, 18.6 g of X…

A: Answer:- This question is answered by using the simple concept of calorimetry which states heat lost…

Q: Macmillan Learning Revell SECOND EDITION q= A chemist dissolved an 12.7-g sample of KOH in 100.0…

A: Given,  Mass of the sample, m1 = 12.7 g  Mass of water, m2 = 100 g  Specific heat of water, C =…

Q: calorimeter containing 837 mL of 1.10 M acid, where the acid has a 1 to 1 molar ratio with sodium…

A: We will calculate ∆H in Kj/mol

Q: 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…

A:

Q: Consider the dissolution of CaCl2: CaCl2 (s) → Ca²+ (ag) +2 Cl¯(ag) AH=-81,5 kJ An 11.8-g sample of…

A: When a solute is dissolved in solvent to form a solution is called dissolution. It measures the…

Q: A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the…

A: Given,moles of the compound = 2.00 molmass of the solution = 135 ginitial temperature of the…

Q: The molar heat of solution of a substance is found to be +21.38 kJ/mol. The addition of 0.100 mol of…

A: Given information: Moles = 0.100 mol Molar heat of solution = +21.38 kJ/mol Temperature = 40.0 °C

Q: A 25.0 g sample of KCI is dissolved in 100 g of water at 30.0°C in a coffee-cup calorimeter. If the…

A: Given: mass of KCl = 25.0 g Molar mass of KCl = 74.55 g/molTherefore, Moles of KCl =  = 0.335…

Q: When a 5.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A: We know that, ΔH = -Ccal x ΔT where Ccal is the heat capacity of the calorimeter and ΔT is the…

Q: In a calirometer 50.00 mL of 2.50 M NaOH was combined with 50.00 mL of 2.25 M HCl from a solution.…

A:

Q: CaO(s) reacts with water to form Ca(OH)2(aq). If 6.66 g CaO is combined with 99.84 g H2O in a coffee…

A: Given data,Mass of CaO=6.66gMass of water=99.84gInitial temperature=20oCFinal…

Q: A constant pressure (or coffee cup calorimeter) contains 125g of water at a temperature of 24.2°C.…

A: Given , mass of water = 125 ginitial temperature, Ti=24.2°Cmass of KBr added = 10.5 gFinal…

Q: A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the…

A:

Q: 5.2 g of NaOH is added to a coffee cup calorimeter containing 861 mL of 1.10 M acid, where the acid…

A: Given molarity of acid = 1.10 M  Volume = 861 mL  Density of the solution = Density of water = 1.0…

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: When a 3.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: A generic solid, X, has a molar mass of 61.6 g/mol. In a constant-pressure calorimeter, 18.3 g of X…

A: Heat absorbed/ released by a solution can be calculated by usingthe expression:Q = m.Cp.∆T where, m=…

Q: Calculate AH dissolution, the enthalpy for the dissolution process in water, per mole of NaOH.…

A:

Q: A generic solid, X, has a molar mass of 75.0 g/mol. In a constant-pressure calorimeter, 18.8 g of X…

A: Mass of solid = 18.8 g molar mass of solid = 75.0 g/mol mass of water =303 g temperature (T1) =…

Q: A sample of 24.9 g of ammonium nitrate, NH4N03, was dissolved in 121.3g of water in a coffee cup…

A: Mass of sample (ammonium nitrate) = 24.9 gram Mass of water = 121.3 gram Specific heat of solution =…

Q: In the laboratory a general chemistry student finds that when 0.73 g of KOH(s) are dissolved in…

A: The given mass of KOH = 0.73 g The given mass of water = 100.40g Total mass of the solution (m) =…

Q: When 50.0 g of 0.200 M NaCl(ag) at 24.1 °C is added to 100.0 g of 0.100 M A9NO3(aq) at 24.1 °C in a…

A: Given: 0.200 M NaCl         mass  of NaCl =50. 0 gram         specific heat = 4.20 J/g C   find:…

Q: 6.00 g of a water soluble salt was dissolved in 75.0mL of water. The initial temperature of the…

A:

Q: 5.00 – mL of 0.64M HCl and 45.00 – mL 0.77M NaOH, both initially at 26.0°C, are mixed in a…

A: Given: Concentration of HCl = 0.64 M Concentration of NaOH = 0.77 M Volume of NaOH solution added =…

Q: A student performed the procedure described in the lab manual using 49.9 mL of 1.0 M HCI and 49.3 mL…

A: Molarity of HCl = 1.0 MVolume of HCl: 49.9 mLMolarity of NaOH = 1.0 MVolume of NaOH = 49.3 mLInitial…

Q: A 7.37 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given, Mass of sample = 7.37 gMass of water = 150 g Mass of solution = 157.37 g Initial temperature…

Q: A 4.77 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given information: Mass of unknown sample = 4.77 g Mass of water = 150.00 g Initial temperature =…

Q: A 4.77 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

Q: A scientist is attempting to determine the specific heat capacity of a newly discovered metal. To do…

A: We have to calculate the specific heat of metal.

Q: A chemist dissolved an 12.9-g12.9-g sample of KOHKOH in 100.0 grams100.0 grams of water in a coffee…

A: A.) To calculate the heat required , we would use the formula , q = m × C × dT  B.) To calculate the…

Q: When 2.07 g of NaCl are added to 114 g of water in a constant pressure calorimeter, the temperature…

A: Mass of NaCl (mNaCl )= 2.07 g Mass of water (mwater ) = 114 g  Increase in temperature = 2.95 °C…

Q: Adding 5.00 g of to 140 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt)…

A: The enthalpy change ΔH is the heat of solution (qrxn) per mole of solute (n). i.e.…

Q: The

A: We will calculate ∆H

Q: A 148.9-g sample of a metal at 74.6°C is added to 148.9 g   at 14.7°C. The temperature of the water…

A: The mass of the metal is .The initial temperature for metal is .The final temperature for metal is…

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…