Physical changes occur when objects or substances undergo a change that does not change their chemical composition. This contrasts with the concept of chemical change in which the composition of a substance changes or one or more substances combine or break up to form new substances.
Answer:
D: When the acidity of a solution increases, the pH increases.
Explanation:
It is totally wrong to assert that when the acidity of a solution increases, the pH of the solution will increase
The right answer is that when the acidity of a solution increases, the pH value decreases.
- The pH scale records the level of acidity and basicity of a substance.
- It runs from 1 to 14
- From 7 to 14 signifies increasing basicity
- As the acidity of a substance increases, the pH value reduces.
- For acids 1 is the highest acidity levels.
Answer:
Medio, por otra parte, es lo que se halla en una posición central o entre dos puntas,
Explanation:
El término medio, en una de sus acepciones más comunes, representa la mitad de una cosa
Answer:
Polar bond
Explanation:
Hjhhhvgjkkkjijhhhggccccgcc
Answer:
326.9mL
Explanation:
...Of a 1.3M aluminium chloride solution that contains 425mmol of aluminium chloride...
The prefix milli, m, means denotes factor of one thousandth (1x10⁻³), that means 425mmol are:
425mmol * (1x10⁻³mol / 1mmol) = 0.425moles of AlCl₃.
In the same way, Molarity, m, is defined as moles of solute (aluminium chloride) per liter. The 1.3M contains 1.3 moles per liter. There are 0.425moles in:
0.425moles * (1L / 1.3moles) = 0.3269L.
In milliliters:
0.3269L * (1000mL / 1L) =
<h3>326.9mL</h3>
