Answer:
Pencil is an element and a heterogeneous mixture
Explanation:
Answer:
So, Luke and Sian has to increase the pH of the soil by adding base to it.
Explanation:
The pH is defined as the negative logarithm of the hydrogen ion concentration in their aqueous solution.
- With increase in hydrogen ion concentration the pH value decreases.
- With decrease in hydrogen ion concentration the pH value increases.
The pH of the soil after testing it on a kit comes out be 5.0, but they both need pH of the soil to 6.5.
Comparison of pH of soil:
= 5.0 < 6.5
= High hydrogen ion concentration > High hydrogen ion concentration
So, Luke and Sian has to increase the pH of the soil by adding base .Doing so will decrease the hydrogen ion concentration in the soil (where as addition of acid lower the pH of soil).
No because they have their full octet. They are full and don't need to bond with any other atoms. The full atoms that are happy are the noble gases.
---- If you need anymore chemistry help ask me....because im very good at chemistry.
<span>e.sr⁺(g) → sr2⁺(g) + e⁻
When remove first electron became Sr</span>⁺, second Sr²⁺.
I think the definition of planetary differentiation is the separation of materials based on density. It involves separating out different constituents of a planetary body as a result of their physical or chemical characteristics, such that each body develops into compositionary distinct layers; such that the denser materials of a planet sink at the center while less dense materials rise to the surface.