The correct answer is, tobacco.
Answer:
d) El agua pesada contiene mas elementos
Explanation:
La diferencia fundamental entre el agua pesada y el agua ligera es que la primera tiene una proporción mayor de deuterio que la segunda. El deuterio es un ión del hidrógeno que tiene un peso atómico mayor que el hidrógeno común y corriente. Por ende, la opción D ofrece la mejor aproximación.
Saponification is the hydrolysis of fats or oils under basic conditions to afford glycerol and the salt of the corresponding fatty acid. ... It is important to the industrial user to know the amount of free fatty acid present, since this determines in large measure the refining loss.
Answer: Uranium is an inert.
Answer:
Li = M₂O
Na = M₂O₂
K = MO₂
Rb = MO₂
Cs = MO₂
Explanation:
Since the reactivity of alkali metals increases on moving down the group with the increase in atomic size, their reactivity towards oxygen increases on going down the from lithium to caesium.
Lithium being the least reactive reacts with oxygen in the air to give white lithium oxide, LiO₂.
Sodium reacts with excess oxygen when heated to form sodium peroxide, Na₂O₂
Potassium reacts with excess oxygen when heated to form potassium superoxide, KO₂
Rubidium reacts with excess oxygen when heated to form rubidium suproxide, RbO₂
Caesium reacts with excess oxygen when heated to form caesium superoxide, CsO₂
