The complete balanced chemical reaction for this would be:
<span>NaOH + C3H6O3
--> NaC3H5O3 + H2O</span>
So we see that exactly 1 mole of NaOH reacts with 1 mole
of lactic acid.
Calculate moles of NaOH.
moles NaOH = 0.07 moles/L * 0.0268 L
moles NaOH = 1.876 x 10^-3 mol
So,
moles C3H6O3 = 1.876 x 10^-3 mol
The molar mass of lactic acid is 90.08 g/mol so the mass
is:
mass C3H6O3 = (1.876 x 10^-3 mol) * 90.08 g/mol
<span>mass C3H6O3 = 0.169 g</span>
Answer:
216 g of NO
Explanation:
We begin from the reaction:
4NH₃ + 5O₂ → 4NO + 6H₂O
We determine the limiting reactant with the moles of each reactant:
4 moles of ammonia react to 5 moles of oxygen
Our 7.2 moles of ammonia may react to (7.2 . 5) /4 = 9 moles
It's ok because we have 9.6 moles of oxygen. 0.6 moles still remain.
5 moles of oxygen react to 4 moles of NH₃
Our 9.6 moles of oxygen may react to (9.6 . 4) /5 = 7.68 moles
We only have 7.2 moles of NH₃ and we need 7.68; so there is no enough ammonia and that's our limiting reagent.
Now we determine the moles of product.
4 moles of ammonia can produce 4 moles of NO
Definetely our 7.2 moles, will produce 7.2 moles of oxide.
We convert to mass: 7.2 mol . 30 g/mol = 216 g
<span> As something gets warmer, it begins to increase the vibration and movement of the molecules that it consists of. In solids, particles are closely packed together and are in direct contact. Since they are close to each other, particles that vibrate near the point of contact will pass on the vibrations to other particles nearby. The vibrations spread throughout the object. Conduction works similarly with liquids and gases, but since the density of the particles is less, there will be less efficient energy transfer between the molecules. Conduction occurs when 2 things at different temperatures touch each other and energy directly goes one object to the next from the material in the hotter object to the material in the colder object at the point of contact.</span>
Answer:
when the forest burns all the trees die and the ground becomes more fertile.
The process of a gas changing into a liquid is known as condensation.