To solve number 18 you have to add the positive and negative to equal zero. For example for 18a it would be K2S ( the 2 is a subscript ) because you need 2 positives to cancel out the 2 negatives.
Answer:
A) Mechanical Weathering
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Explanation:
Mechanical weathering breaks rocks into smaller pieces without changing their composition. Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface
Answer:
ok, maybe draw like a few plants and dear, you know and draw them out of cells, like the shape. so like a bunch of cells together making the shape of a deer or plant and stuff. i hope this helps
Explanation:
Kw = 1 x 10⁻¹⁴
<span>Kw = [ H₃O⁺] [ OH⁻]
</span>
1 x 10⁻¹⁴ = [ H₃O⁺] * 4 x 10⁻³
[H₃O⁺] = 1 x 10⁻¹⁴ / 4 x 10⁻³
[H₃O⁺] = 2.5 x 10⁻¹² M
hope this helps!
Chemical reactions are reversible, which means that the reaction that occurs from the reactants to form products can be also from the products to form the reactants again, this is widely studied in Chemical Equilibrium and Le Chantelier's principleons are