Their compositions are mostly gases, such as hydrogen, and small amountsof rocky material (mostly at theircores). hope this helps .have a nice day
Explanation:
An acid is a substance that interacts with water to produce excess hydroxonium ions, H₃O⁺ in an aqueous solution.
The hydroxonium ions formed by the chemical bonding between the oxygen of water molecules and the protons released by the acid due to its excess ionization.
For example:
HCl + H₂O ⇄ H₃O⁺ + Cl⁻
acid water hydroxonium chloride
A base is a substance that interacts with water to yield excess hydroxide ions, OH⁻ in an aqueous solutions:
NH₃ + H₂O ⇄ NH₄⁺ + OH⁻
Ammonia water ammonium hydroxide
These explanations are based on the arrhenius theory.
learn more:
Bronsted-lowry theory brainly.com/question/4083753
Acid reaction brainly.com/question/5273689
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Answer:
Thickness of magazine = 9.42 mm.
Explanation:
Considering vertical motion of spider:-
Initial velocity, u = 0.870 sin 35 = 0.5 m/s
Acceleration , a = -9.81 m/s²
Time, t = 0.077 s
We have equation of motion s= ut + 0.5 at²
Substituting
s= 0.5 x 0.077 - 0.5 x 9.81 x 0.077²
s = 9.42 x 10⁻³ m = 9.42 mm
Thickness of magazine = 9.42 mm.
The answer is D, the brain actually stops growing around age 18