A quantity of liquid methanol,CH3OH,is introduced into a rigid 3.00-L vessel,the vessel is sealed,and the temperature is raised to 500 K.At this temperature,the methanol vaporizes and decomposes according to the reaction CH3OH(g) 
CO(g) + 2H2(g) ,Kc = 6.90 ×10-2
If the concentration of H2 in the equilibrium mixture is 0.426 M,what mass of methanol was initially introduced into the vessel?
Definitions:
Coefficient Of Correlation
A numerical measure that quantifies the degree to which two variables are related or associated, indicating the strength and direction of their relationship.
Negative
A term often used to describe values below zero, or more broadly, to indicate a refusal, denial, or the absence of a positive quality.
Independent Variable
A variable in an experiment or study that is manipulated or changed to observe its effect on a dependent variable.
Dependent Variable
The variable in an experiment or study that is assumed to depend on or be caused by another variable (the independent variable).
Q10: Which electrochemical cell pictured below corresponds to
Q12: What is the value of K<sub>b</sub> for
Q19: A SHE has the acid concentration of
Q25: Which of the following pure substances has
Q38: For which of the following pure substances
Q64: In a fuel cell,an external source of
Q68: Which is included in the K<sub>sp</sub> expression?
Q74: Which compound is the most soluble in
Q84: What is the pH of a buffer
Q100: The mole fraction of potassium nitrate in