Answer:
-138.9 kJ/mol
Explanation:
Step 1: Convert 235.8°C to the Kelvin scale
We will use the following expression.
K = °C + 273.15 = 235.8°C + 273.15 = 509.0 K
Step 2: Calculate the standard enthalpy of reaction (ΔH°)
We will use the following expression.
ΔG° = ΔH° - T.ΔS°
ΔH° = ΔG° / T.ΔS°
ΔH° = (-936.92kJ/mol) / 509.0K × 0.51379 kJ/mol.K
ΔH° = -3.583 kJ (for 1 mole of balanced reaction)
Step 3: Convert -9.9°C to the Kelvin scale
K = °C + 273.15 = -9.9°C + 273.15 = 263.3 K
Step 4: Calculate ΔG° at 263.3 K
ΔG° = ΔH° - T.ΔS°
ΔG° = -3.583 kJ/mol - 263.3 K × 0.51379 kJ/mol.K
ΔG° = -138.9 kJ/mol
Answer:
Option-B (water) is the correct answer.
Explanation:
Gas hydrates are made up of Solid-Ice water and a natural gas like Methane gas trapped in the lattice of ice water. Gas hydrates are mainly found deep down in the sea where the atmospheric pressure is greater than 1 atm.
Generally Gas hydrates have two main applications.
a) It stabilizes the sea floor other wise its melting will cause land sliding in sea floor.
b) Secondly, it traps a green house gases like Methane, if released these gases could produce Climate changes.
Human hair. Human hair as energy because it is living so, it is most likely to give up electrons.
Given:
Number of items = 25
Price per item = $18
<u>To determine:</u>
The total revenue
<u>Explanation:</u>
Total revenue = quantity * price per item
= 25 items * 18 dollar/ 1 item = $450
Ans: A) The total revenue is $450
Answer:
Explanation:
Ksp (BaCO₃) = 5.1 x 10⁻⁹
Ksp (CaCO₃) = 4.8 x 10⁻⁹
Ksp (BaSO₄) = 1.1 x 10⁻¹⁰ = .11 x 10⁻⁹
Since solubility product of BaCO₃ is greatest , its solubility is maximum .It is to be noted that all of them will be giving only two number of ions after dissolution in water .
BaCO₃ = Ba⁺ + CO₃⁻
Ksp = [ Ba⁺²] [ CO₃⁻² ]
= [ Ba⁺²]²
[ Ba⁺²] = √ Ksp
similarly we can find equations for others .
