Answer : The amount of heat changes is, 56.463 KJ
Solution :
The conversions involved in this process are :
Now we have to calculate the enthalpy change.
where,
= enthalpy change or heat changes = ?
n = number of moles of water = 1 mole
= specific heat of solid water =
= specific heat of liquid water =
= specific heat of liquid water =
m = mass of water
= enthalpy change for fusion = 6.01 KJ/mole = 6010 J/mole
= enthalpy change for vaporization = 40.67 KJ/mole = 40670 J/mole
Now put all the given values in the above expression, we get
(1 KJ = 1000 J)
Therefore, the amount of heat changes is, 56.463 KJ
B, since the percentage went up the number of foxes increased as well
Answer:
The order of increasing speed is: Cl₂ < CO₂ < Ar < N₂ < H₂.
Explanation:
- Thomas Graham found that, at a constant temperature and pressure the rates of effusion of various gases are inversely proportional to the square root of their masses.
<em>∨ ∝ 1/√M.</em>
where, ∨ is the rate of diffusion of the gas.
M is the molar mass of the gas.
Molar mass of N₂ = 28.0 g/mol.
Molar mass of H₂ = 2.0 g/mol.
Molar mass of Cl₂ = 70.9 g/mol.
Molar mass of CO₂ = 44.0 g/mol.
Molar mass of Ar = 39.94 g/mol.
∵ Molar mass of Cl₂ > Molar mass of CO₂ > Molar mass of Ar > Molar mass of N₂ > Molar mass of H₂.
<em>Remember that ∨ ∝ 1/√M.</em>
∴ The speed of H₂ > N₂ > Ar > CO₂ > Cl₂.
<em>So, the order of increasing speed is: Cl₂ < CO₂ < Ar < N₂ < H₂.</em>
Answer:
When the temperature of an object increase, the object's particle move faster.
Explanation:
Energy in form of the heat can be absorbed by the object, energy is translated to object's particles. In that moment, energy is transformed in another form - kinetic energy. Kinetic energy manifest as a faster particle movement ( or vibration ).
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