Answer:
4.12 mol
Explanation:
Given data:
Moles of LiOH required = ?
Volume of solution = 4.2 L
Molarity of solution = 0.98 M
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
we will calculate the moles from above given formula.
0.98 M = number of moles / 4.2 L
0.98 M × 4.2 L = number of moles
Number of moles = 0.98 M × 4.2 L
Number of moles = 4.12 mol (M = mol/L)
Bedrock is used in the construction of structures, the topsoil is important for the production of crops and the loss of fertile soil is known as desertification.
<h3>Bedrocks, topsoil, and desertification</h3>
- Bedrocks are underlining rocks below soils. They are useful in construction works such as buildings, bridges, etc.
- Topsoils are the topmost portions of soils. They are usually rich in humus and organic matter and are therefore very good for agricultural crop production.
- Desertification is simply the loss of fertile soils and their transformation to barren, unproductive lands. Topsoils are lost and soils are rendered unsuitable for agriculture.
More on desertification can be found here: brainly.com/question/24255548
When a substance changes into a different substance, you are observing its chemical properties.
In a physical change, the substance must <em>not </em>change into a different substance.
The physical and chemical properties of a substance do <em>not</em> change.
> How many valence electrons does a helium atom have?
The electron configuration of Helium is simply 1s2. We see
that its outermost shell is the s shell and it contains 2 electrons, therefore
the number of valence electrons is also 2.
> What is the formula of the ion formed when potassium
achieves noble-gas electron configuration?
Potassium has a electron configuration of [Ar] 4s1. To
have an electron configuration of only [Ar] which is a noble gas, the one electron
from 4s1 should be removed, hence:
<span>K+</span>
Answer:
Salt is a mineral/substance that is made up of sodium chloride. It is typically used as a food ingredient and a nutrient. There are different types of salt such as kosher salt, table salt, sea salt, smoked salt, etc.
