Answer:
1. Qsol = -5.87 kJ
2. ΔHrn = 18.4 kJ/mol
Explanation:
According to the law of conservation of energy, the sum of the heat absorbed by the reaction and the heat released by the solution is zero.
Qrn + Qsol = 0
Qrn = -Qsol
We can calculate the heat released by the solution using the following expression.
Qsol = c . m . ΔT
where,
c: specific heat capacity of the solution
m: mass of the solution
ΔT: change in the temperature
Qsol = (4.184 J/g.°C) . (243g + 32.3g) . (17.90°C-23.00°C) = -5.87 × 10³ J = -5.87 kJ
The heat absorbed by the reaction is:
Qrn = -Qsol = 5.87 kJ
In the balanced equation, we have 1 mole of KNO₃. Given we are in a constant-pressure calorimeter, the enthalpy of reaction (per mole of KNO₃) is:
Answer:
It will rotate counter-clockwise
Explanation:
Momentum is greater on the left side.
The products would be an alcohol and a salt. so it would be A.
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The answer is "<span>the quantity of heat that is required to raise 1 g of the sample by 1°C (Kelvin) at a constant pressure"</span>
Answer:
Ionization energy is the energy required to remove an electron from a specific atom. It is measured in kJ/mol, which is an energy unit, much like calories. The ionization energies associated with some elements are described in the Table 1. For any given atom, the outermost valence electrons will have lower ionization energies than the inner-shell kernel electrons. As more electrons are added to a nucleus, the outer electrons become shielded from the nucleus by the inner shell electrons. This is called electron shielding .
Explanation:
a little summary
Ionization energy refers to the amount of energy needed to remove an electron from an atom.
Ionization energy decreases as we go down a group.
Ionization energy increases from left to right across the periodic table.