Answer:
multiply the first equation by 3 to cancel the electrons in both equations
then combine both equations
then minus both cell potentials which equals 0.78 V
I'm not sure though
Metallic bonds are found in metals like zinc.
Answer:
1.7 atm
Explanation:
For first syringe :
Pressure = 1.2 atm
Temperature = 325 K
Volume = 589 mL = 0.589 L (1 mL = 0.001 L)
Using ideal gas equation as:
PV=nRT
where,
P is the pressure
V is the volume
n is the number of moles
T is the temperature
R is Gas constant having value = 0.0821 L.atm/K.mol
Applying the equation as:
1.2 atm × 0.589 L = n × 0.0821 L.atm/K.mol × 325 K
⇒n = 0.02649 moles
For second syringe :
Pressure = 2.6 atm
Temperature = 298 K
Volume = 473 mL = 0.473 L (1 mL = 0.001 L)
Using ideal gas equation as:
PV=nRT
Applying the equation as:
2.6 atm × 0.473 L = n × 0.0821 L.atm/K.mol × 298 K
⇒n = 0.050266 moles
Total moles = 0.02649 moles + 0.050266 moles = 0.076756 moles
Volume = 1 L
Temperature = 0.00 °C
The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T = (0 + 273.15) K = 273.15 K
Using ideal gas equation as:
PV=nRT
Applying the equation as:
P × 1 L = 0.076756 × 0.0821 L.atm/K.mol × 273.15 K
⇒Total P = 1.7 atm
D. ( Neither ultrasonic nor infrasonic vibrations can be heard by humans. )
Answer:
60.7 mole
Explanation:
for every 4 moles of iron 3 moles of oxygen is used.
So, moles of oxygen = = 60.675