So we know that this amount of atoms is Avogadro's number - the number of atoms in 1 mole of a substance.
So then, using dimensional analysis, we can find the mass, in grams, of potassium.
First we must find the molar weight of potassium as found on the periodic table: 39.098g/mol
Then we can solve directly for mass:
Therefore, the amount of atoms you have given, in terms of mass, will equal 39.098g - if the answer requires significant figures, then the mass would be 39.1g of potassium.
Answer:
oxidation state of sulphur=x
Explanation:
Na2S4O6=2[+1]+4x+6[-2]=0
+2+4x-12=0
4x-10=0
4x=10
x=10/4=2.5
Answer:
When two or more atoms chemically bond together, they form a molecule. When molecules are made from two or more different kinds of atoms, the substances are called compounds. If molecules are made from only one kind of atom, the substances are elements.
Explanation:
<em> gave an explanation in my answer XD anyway hope I helped. Have a good day!</em>
In the periodic table, there is a size trend.
The trend occurs horizontally and vertically on the table.
- From right to left, the atomic radius gets larger.
- From top to bottom, the atomic radius gets larger.
The reasoning for this is the additional energy levels and electrons being added as you go from right to left or top to bottom.
We can see that Magnesium is higher and more right in the periodic table than sodium and calcium.
Thus, Magnesium has a smaller atomic radius than both sodium and calcium
Answer:
3
Carbon readily forms ionic bonds with other carbon atoms.
Explanation: