How is human activity affected by sinkholes
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Answer:
22.48°C is the final temperature of the solution.
Explanation:
Heat of neutralization of reaction , when 1 mol of nitric acid reacts= ΔH= -56.2 kJ/mol= -56200 J/mol
Moles of nitric acid = n
Volume of nitric acid solution =
Molarity of the nitric acid = 0.600 M
Moles of barium hydroxide = n'
Volume of barium hydroxide solution =
Molarity of the barium hydroxide= 0.300 M
According to reaction, 2 mol of nitric acid reacts with 1 mol of barium hydroxide .Then 0.486 mol of nitric acid will react with :
barium hydroxide.
Heat release when 0.486 mol of nitric acid reacted = Q
= ΔH × 0.486 = -56200 J/mol × 0.486 mol=-27,313.2 J
Heat absorbed by the mixture after reaction = Q' = -Q = 27,313.2 J
Volume of the nitric solution = 0.81 L = 810 mL
Volume of the ferric nitrate solution = 0.81 L = 810 mL
Total volume of the solution = 810 mL + 810 mL = 1620 mL
Mass of the final solution = m
Density of water = density of the final solution = d = 1 g/mL
Initial temperature of the both solution were same =
Final temperature of the both solution will also be same after mixing=
Heat capacity of the mixture = c = 4.184 J/g°C
Change in temperature of the mixture = ΔT =
22.48°C is the final temperature of the solution.
Answer:
7.35 atm
Explanation:
From the question we are given;
- Initial volume, V1 as 28 L
- Initial temperature, T1 as 42°C or 315 K
- New volume. V2 as 49 L
- New temperature, T2 as 27°C or 300 K
- New Pressure, P2 as 4.0 atm
We are required to determine the initial pressure, P1
We are going to use the combined gas law...
According to the combined gas law,
Therefore, to get P1
We get;
Therefore, the initial pressure of the gas is 7.35 atm