What is the oxidation number of iron in FeO?
2 answers:
You might be interested in
Answer:
The mass is
Explanation:
From the question we are told that
The volume of oxygen produced is
The temperature is
The pressure is
From the ideal gas law we have that
Where R is the gas constant with the value
n is the number of moles making it the subject of the formula
Substituting values
From the chemical equation
one mole of produces one mole of kCl and
of oxygen
x mole of produces x mole of kCl and
of oxygen
So
Now the molar mass of KCl is a constant with a value
Now the mass of KCl is mathematically evaluated as
Substituting values
Answer:
0.18 mol
Explanation:
Given data
- Volume (V): 4.5 L
- Temperature (T): 25°C
- Pressure (P): 100.4 kPa
Step 1: Convert the temperature to Kelvin
We will use the following expression
K = °C + 273.15
K = 25°C + 273.15
K = 298 K
Step 2: Convert the pressure to atmospheres
We will use the relation 1 atm = 101.3 kPa.
Step 3: Calculate the moles of the gas
We will use the ideal gas equation.