Answer:
Explanation:
In calorimetry we apply the formula
heat lost = heat gained
m₁ x s₁ t ₁ = m₂ x s₂ t ₂
here t₁ and t₂ are change in temperature . suppose s₁ denotes specific heat of metal a nd s₂ denotes specific heat of water .
If s₁ is far less than s₂ , t₁ will be far more than t₂ , to balance the two sides
Hence change in temperature of metal pot will be more than change in temperature of water.
Final temperature will be far away from temperature of the metal pot.
Final temperature will be closer to temperature of water.
Answer:
40 mmHg
Explanation:
Dalton's Law of Partial Pressures, states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the individual gases in the mixture. Hence if I have gases A,B and C and I choose to designate the pressure of gas A as PA, the pressure of gas B as PB , the pressure of gas C as PC and the total pressure of all the gases together as PT. Then from Dalton's law; PT= PA + PB + PC
From the question; we designate the pressure of hydrogen as PA, pressure of nitrogen as PB and pressure of oxygen as PC.
PA= 70 mmHg
PB= the unknown
PC= 650 mmHg
If the total pressure of the gas mixture (PT) = 760 mmHg
Then;
760= 70 + PB + 650
PB= 760- (70+650)
PB= 760 - 720
PB= 40 mmHg
Therefore, the partial pressure of nitrogen is 40 mmHg
Explanation:
According to Clausius-Claperyon equation,
The given data is as follows.
= (63.5 + 273) K
= 336.6 K
= (78 + 273) K
= 351 K
= 1 atm, = ?
Putting the given values into the above equation as follows.
=
=
= 3813.1 J/mol
Thus, we can conclude that the heat of vaporization of ethanol is 3813.1 J/mol.
It’s c or b I think I’m not sure