Answer: The correct answer will be 5 moles, because according to the stoichiometric ratio, 5 moles of oxygen produce 6 moles of water.
Explanation:
The balanced equation is:
⇒ 
As you can see in the balanced reaction, it is necessary 5 moles of oxygen for obtain 6 moles of water. This stoichiometric ratio can be used for calculate any amount of produced water, once you have a specific amount of oxygen.
Feet would be the best unit to use. Yards would work as well though.
Hope that helps!
Answer:
The answer I believe is B. Erosion
Explanation:
Just sounds better than all the other choices.
Answer: K is bigger in atomic size. The metallic character increases as the size increases.
Explanation:
Reactivity of a metal is defined as the tendency of an element to lose electrons. The metallic character increases as we move down a group and it decreases as we move across a period.
When the size of an element increases, the valence electrons gets away from the nucleus and the tendency of an element to loose electrons increases.
In a group, the size of an element increases because there is an addition of new shell and electron is added in that shell.
Thus for alkali metals, the metallic character increases from Lithium to sodium to potassium and so on.
