Answer: The correct answer is Option B.
Explanation:
To calculate the number of moles, we use the formula:

Molar mass of iron = 55.8 g/mol
Given mass of iron = 558.8
Putting values in above equation, we get:

For the given chemical equation:

By Stoichiometry,
4 moles of Iron produces 2 moles of Iron(III) oxide
So, 1 mole of Ion will produce =
= 0.5 mole of Iron (III) oxide.
Hence, the correct answer is Option B.
Answer:
The graph shows a directly proportional relationship between volume and temperature and represents Charles' Law.
Explanation:
The relation between volume and temperature is given by :
Ideal gas law, PV = nRT
Where
P is pressure
V is volume
R is gas constant
T is temperature
As volume and temperature have direct relationship. Charles law states that there is a direct relationship between volume and temperature. The correct option is (a).
Answer:
Color.
Explanation:
Hello,
In this case, since matter has a lot of properties regarding its physical condition and chemical composition, those related to the appearance of matter are physical. In such a way, since the student observed to different substances with also different colors, we can infer that the property of matter that was observed in the scenario was color, which accounts for the graphical perception we have from them.
Best regards.
According to this formula:
K= A*(e^(-Ea/RT) when we have K =1.35X10^2 & T= 25+273= 298K &R=0.0821
Ea= 85.6 KJ/mol So by subsitution we can get A:
1.35x10^2 = A*(e^(-85.6/0.0821*298))
1.35x10^2 = A * 0.03
A= 4333
by substitution with the new value of T(75+273) = 348K & A to get the new K
∴K= 4333*(e^(-85.6/0.0821*348)
= 2.16 x10^2