Anne completely fills the fuel tank of her car with a mixture of gasoline and ethanol, C2H5OH. When filled, the fuel tank contains 2350 g of C2H5OH. How many moles of C2H5OH are in the fuel tank?

There are 51.09 moles of C₂H₅OH in the fuel tank

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

moles can also be obtained by dividing the mass (in grams) with the molar mass

m = mass  

M = relative molecular mass / molar mass  

The fuel tank contains 2350 g of C₂H₅OH, so mol  C₂H₅OH(MW= 46 g/mol) :

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :