Answer:
True
Explanation:
The amount of Hydrogen ion and hydroxide ion determines the acidity or alkalinity of an aqueous solution.
The higher the hydrogen ion content the higher the acidity of the solution. The increase in the amount of the hydrogen ion brings about decrease in the pH scale. The pH scale of about 0 - 2 has a very high hydrogen ion contents and as the Hydrogen ion decreases the pH value increases.
The higher the hydroxide ion contents the higher the alkalinity . The increase in the amount of hydroxide ion brings about increase in the pH value. The pH value of 12 - 14 depicts very strong alkalinity content. As the hydroxide ion increases the pH value increases.
If the hydroxide ion and hydrogen ions are of equal proportion the solution becomes neutral. The pH value for neutrality is 7.
Hundreds of them....hope it helps
To separate oil from water, add a solution of soluble ionic salt to the solution. Distillation, which involves boiling and condensing the water, is another option, as well as partially freezing the oil and water combination and discarding one-fourth to one-third of the unfrozen water.
Answer:
NaO
Explanation:
Empirical formula:
It is the simplest formula gives the ratio of atoms of different elements in small whole number
.
Given data:
Percentage of sodium = 59.0%
Percentage of oxygen = 41%
Empirical formula = ?
Solution:
Number of gram atoms of Na = 59.0 / 23 = 2.6
Number of gram atoms of O = 41 / 16 = 2.6
Atomic ratio:
Na : O
2.6/2.6 : 2.6/2.6
1 : 1
Na : O = 1:1
Empirical formula is NaO.
Answer: D
Explanation: P = W/t
W = F d
When dividing, if you have a large number over a small, you get a large number. We want a small number, so we want the opposite for our P : W/ t formula. We want a small Work and a large time.
Right off the bat, the two with the least time aren't right then.
From there, we can estimate how much work it would take using the W = F d equation. If there is a small distance, there is less work, which is what we want to achieve a small work over large time.
So, the choice with the most time and the least distance should be correct.