How many moles of NH4NO3(s) must be dissolved in water so that 73.0 kJ of heat is absorbed from the water? (The molar heat of so lution of NH4NO3 is 25.7 kJ/mol.)
2 answers:
Answer: 2.84 moles
Explanation: Heat of solution is the heat change associated with the dissolution of a substance in a solvent at constant pressure.
The enthalpy of solution is most often expressed in kJ/mol at constant temperature.
It is given that: Molar heat of solutionof = 25.7 kJ/mol
25.7 kJ of heat is absorbed when 1 mole of is dissolved in water.
73.0 kJ is released when= are dissolved in water.
1 mole of NH4NO3 requires absorption of 25.7 kJ/mol. Therefore; 1 kJ of heat energy is absorbed by dissolving 1/25.7 moles of NH4NO3. Hence; For an energy of 73.0 kJ to be absorbed the moles of NH4NO3 that dissolves will be; = (1/25.7 × 73) = 2.84 moles Hence; 73 kJ is absorbed by dissolving 2.84 moles of NH4NO3.
You might be interested in
Answer: hope this is correct
I believe the four classifications of matter would be:
- element
- compound
- homogenous mixture
- heterogeneous mixture
And then the two pure substances would be element and compound.
Answer:
Explanation:That’s right
Answer:
write english bro
Explanation:
pls i cant understand
SrCO3 Sr=2 charge CO3=2 charge from polyatomic chart