The answer is permeability
I took my test and it was right
Answer:
0.1035 M
Explanation:
Considering:
Sodium chloride will furnish Sodium ions as:
Given :
For Sodium chloride :
Molarity = 0.288 M
Volume = 3.58 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 3.58×10⁻³ L
Thus, moles of Sodium furnished by Sodium chloride is same the moles of Sodium chloride as shown below:
Moles of sodium ions by sodium chloride = 0.00103104 moles
Sodium sulfate will furnish Sodium ions as:
Given :
For Sodium sulfate :
Molarity = 0.001 M
Volume = 6.51 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 6.51 ×10⁻³ L
Thus, moles of Sodium furnished by Sodium sulfate is twice the moles of Sodium sulfate as shown below:
Moles of sodium ions by Sodium sulfate = 0.00001302 moles
Total moles = 0.00103104 moles + 0.00001302 moles = 0.00104406 moles
Total volume = 3.58 ×10⁻³ L + 6.51 ×10⁻³ L = 10.09 ×10⁻³ L
Concentration of sodium ions is:
<u>
The final concentration of sodium anion = 0.1035 M</u>
Answer:
Explanation:
Given data:
Mass of sample = 0.673 g
Volume = 250.0 mL (0.25 L)
Temperature = 83°C (273+83= 356 k)
Pressure = 747 torr (747/760 = 0.98 atm)
Gas type = ?
Solution:
PV = nRT
n = PV/RT
n = 0.98 atm× 0.25 L / 0.0821 atm. L/mol.K × 356 k
n = 0.245 / 29.23/mol
n = 0.01 mol
Number of moles = mass/ molar mass
Molar mass = 0.673 g / 0.01 mol
Molar mass = 67.3 g/mol
molar mass of CO2 = 44 g/mol
molar mass of H2 = 2.016 g/mol
molar mass of SO3 = 80.066 g/mol
molar mass of Ar = 40 g/mol
molar mass of Xe = 131.3 g/mol
So non of these gases are present.