The reaction equation is: C2H5OH + 3 O2 = 2 CO2 + 3 H2O. Therefore, the ratio of moles of O2 to moles of C2H5OH is 3, and 3 X 1.3 = 3.9 moles of O2 are required. The molecular mass of O2 is about 32, so that 3.9 X 32 = 125 grams of oxygen.
We need to balance the equation.
2S + 3O2 >> 2SO3 Now the limiting reactant is found.
3.37 mol S ( 3mol O2/2mol S ) = 5.06 mol, and we do not have that much sulfur, so sulfur limits the reaction.
3.37 mol S (2 mol SO3/2 mol S ) = 3.37 mol SO3 produced.
To determine the number of molecules of a substance, we can use Avogadro's number, which states that in every mole of a substance, there are 6.022 x 10^22 particles, or in this case molecules. This can be rewritten as the ratio: 1 mol / 6.022 x 10^22 molecules.
This problem is deceptively tricky: you might think that given 3 moles oxygen, we can just write it as 3 mol O. However, it is important to note that oxygen naturally exists as O2. So, we have to convert what's given into moles of O
3.00 mol O2 x 2 mol O = 6.00 mol O
1 mol O2
In this problem, we want to cancel out the mol unit in the numerator. We can flip the ratio above to make it 6.022 x 10^23 molecules/1 mol
6.00 mol O x 6.022x10^22 molecules O = 3.61x10^22 molecules O
1 mol O
The answer is 0.34567934 X 2.455 - one gorilla
The number of moles of O2 is 4.
40 mole
In this case, the equation is balanced.
A "balanced" equation.
The number of reactants atoms must be equal to the number of products atoms.
Type your answer here... The ratio of the substances' coefficients equals the ratio of their number of moles.
21 pounds = 9.52 kilograms. (to convert pounds to kilograms, multiply the number of pounds by 0.45359237).
(4/9) x = That's not an equation. If there were a number after the 'equals' sign, then we could calculate the value of 'x'. But as it is, there's no question there, so there's nothing to solve.
That word "equals" in there makes it an equation.
For the equation 80% of what number equals 40, the unknown number is 50.
Number density.
The property is: If equals are subtracted from equals, the results are equal.
9
In this case, the equation is balanced.
In this case, the equation is balanced.
The discriminant is -27 and so there are no real roots.
A "balanced" equation.
3x+2 = 8
Number of neutrons = Atomic mass - Atomic number