Answer:
It helps identify trends and group elements with similar properties.
Explanation:
Arranging the elements according to the atomic mass wouldn't help us have groups and periods with predictable properties that we can have when arranging it according to atomic number. Don't forget that isotopes have different masses.
The correct answer is A. Diamond is an example of elemental carbon. It is an allotrope of carbon where the atoms are arranged in a face-centered cubic crystal structure. It is less stable than the other allotrope of carbon which is graphite.
1. Acids have highest concentration of hydronium ions.
2. Bases have highest concentration of Hydroxide ions
3. a. less than 7 b. more than 7
4. Acids (Presence of hydronium ions)
You need Conclusions too?
Molar mass SiO2 = 28 + 32 = 60
<span>so moles sand = 3.4 x 10-7 / 60</span>