Answer:
0.045 moles of NaOH
Explanation:
When this units are together mol/L, we talk about M, molarity.
This kind of concentration shows the relation between moles of solute which are contained in 1L of solution.
In this case, our NaOH solution is 0.30 M
M = mol/L
Then, M . L = mol
We convert volume to L → 150 mL . 1L /1000 mL = 0.150L
0.150 L . 0.30mol/L = 0.045 moles
Filtration can be used to separate sand and water.
Answer:
hello your question is incomplete attached below is the complete question
answer : attached below
Explanation:
The Lewis structure given in the question is incorrect attached below is the correct Lewis structure.
Lewis structure of a molecule is the representation of the valence electrons in a molecule
A chemical formula can tell one the consisting atoms, the types of atoms and which they belong.Also through mole ratios, the number of atoms contained in a compound can also be identified through the chemical formula. In this problem, the answer is a. True.
The number of oxygen atoms that are in 4 Al₂O₃ are 12 atoms
<u><em> Explanation</em></u>
- The subscript in a chemical formula indicate the number of atoms of element immediately before the subscript.
- coefficient is the number in front of the formula and tells us how many molecules of a given formula are present.
- Since 4Al₂O₃ has coefficient of 4 and the subscript of O is 3 the number of O atoms = 4 x 3=12 atoms
