Answer:
Keq = 0.217
Explanation:
Let's determine the equilibrium reaction.
In gaseous state, water vapor can be decomposed to hydrogen and oxygen and this is a reversible reaction.
2H₂(g) + O₂(g) ⇄ 2H₂O (g) Keq
Let's make the expression for the equilibrium constant
Products / Reactants
We elevate the concentrations, to the stoichiometry coefficients.
Keq = [H₂O]² / [O₂] . [H₂]²
Keq = 0.250² / 0.8 . 0.6² = 0.217
Answer: Law of conservation of mass explains these observations.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products formed must be equal to the mass of reactants taken.
In order to get the same mass on both sides, the atoms of each element must be balanced on both sides of the chemical equation.

Mass of reactants= mass of Mg+ mass of
= 48 g + 32 g = 80 g
Mass of products = mass of
= 80 g
Thus mass of reactants is equal to mass of products, thus law of conservation of mass is obeyed.
When the sweat evaporates in an endothermic exactions heat is also 'taken' from the body
Answer:
either bacterial cells or plant cells but I think bacterial
Explanation:
from google: Bacteria are single celled microbes. Bacteria are classified into five groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes). ... They can exist as single cells, in pairs, chains or clusters.
- cannot be human or mouse cells as both are animals and animal cells do not have cell walls
The question is kind of weird, but the events that occur is based on the type of hormone being released. Like puberty. It's an event coming from different types of hormones being sent to a tissue.