Answer: If a substance is the limiting reactant, then it will be completely used by the time the reaction completes because it is the reactant that reacts completely and the reaction stops after it is completely used up.
Explanation:
Limiting reagent is a reagent as it limits the formation of product and Excess reagent is the reagent which is preset in excess.
For example: if 0.75 moles of HCl and 1.5 moles of magnesium are reacted together.
According to stoichiometry:
As 2 mole of reacts with 1 mole of
0.75 moles of will react with =
of
is a limiting reagent as it limits the formation of product and Mg is an excess reagent as (1.5-0.38)=1.12 moles of magnesium are left unreacted.
1) If the arrangement is symmetrical and the arrows are of equal length the molecule is nonpolar
2) If the arrows are of different lengths and if they do not balance each other the molecule is polar
3) If the arrangement is asymmetrical the molecule is polar
Answer:
Explanation:
Hola,
En este caso, podemos usar la ley de Boyle, la cual nos permite analizar el comportamiento volumen-presión en un gas ideal de manera inversamente propocional:
Así, dado el volumen y la presión inicial, la cual se convierte a atmósferas (760 torr = 1atm), calculamos el volumen final a 1 atm como se muestra a continuación:
Saludos!