There are negative ions and positive ions known as anions and cations.
Atoms of elements (besides the noble gases) are not stable.
These atoms lose or gain electrons to gain the stable electronic configuration of a noble gas which has either 2 electrons or 8 electrons in the valence shell.
Since an atom is neutral, once it loses or gain electrons, it gains charge and is known as an ion
Answer:
0.
Explanation:
All elements existing on their own in their free states has an oxidation number of 0.
The mas %(m/m) concentration of the solution is calculated using the below formula
mass of the solute/mass of the solvent x100
mass of the solute = 500g
mass of the solvent = 2.50kg in grams= 2.50 x1000 = 2500 g
%(M/M)= 500 g/2500g x100= 20% (m/M)
Answer:
EF CH2O MF C5H10O2
Explanation:
C40/12H6.7/1 O53.29/16 = C3.33H6.7O3.33
Divide by 3.33 C1H2O1 empirical mass = 30g/mol
Mol mass 150.1 g/mol 5 times more
multiply empirical formula by 5
As you said, the answer is 150.
But in all the numbers, there's a comma with two zeros, and so you have to put them in your answer : 150,00
They are the significative numbers.
Hope it helps