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GalinKa [24]
3 years ago
14

Please help i need help with this (if you can’t see the last one it says thermal)

Chemistry
1 answer:
LUCKY_DIMON [66]3 years ago
3 0

Answer:

it would have sound a

thermal .why a train needs coal and coal get burned by heat that is thermal energy and sound beacuse a train makes sound by moving

Explanation:

have a good day /night

may i please have a branlliest

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Which statement describes the Arrhenius interpretation of acids and bases?
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See Explanation

Explanation:

Note => 1st one should understand that for an 'acid' to be an acid and a 'base' to be a base, two requirements must be met, (1) the compound must have an ionizable Hydrogen for acids or Hydroxide for bases, and (2) must be in water and ionize delivering H⁺ ions from acids and OH⁻ ions from bases. The  Arrhenius acids are characterized by having an ionizable hydrogen which when added into water increases the hydronium ion concentration (H₃O⁺). Arrhenius bases are characterized by having an ionizable hydroxide function (OH-).

Typically, the acids and bases are characterized as either strong or weak  electrolytes. the Strong electrolytes ionize 100% in water and Weak electrolytes less than 100%.

The strong acids include HCl, HBr, HI, HNO₃, HClO₄ and H₂SO₄ (1st ionization step). Any acid (H-Anion) not a member of the strong 6 is a weak acid.

The strong Arrhenius Bases are Group IA and Group IIA Hydroxides except for Beryllium Hydroxide. Weak Arrhenius Bases are ammonia or ammonia derivatives (amines) in water.  

=> NH₃ + H₂O => NH₄OH ⇄ NH⁺ + OH⁻.

The ammonia derivatives follow the same reactive nature in water.

=> RNH₂ + H₂O => RNH₃OH ⇄ RNH₃⁺ + OH⁻ where R- is a structural substrate; e.g., Methyl Amine => H₃C - NH₂ .

5 0
3 years ago
How many protons, neutrons, and electrons does S^2- have
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The protons and electrons in each element are equal. The sulfur has 16 electrons and 16 protons. But the ionic atom's electron quantity changes depending on how many it has gained. 'S2-' has gained 2 electrons, which means it has now 18 electrons and 16 protons. 16 neutrons

Explanation:

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2 years ago
Elias observed a sample in the classroom. The sample was a liquid at room temperature. He performed a conductivity test and foun
marusya05 [52]

Answer:

C) nonmetal

Explanation:

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The sample is in liquid state and do not conduct electricity.

We have given four types of classification.So for first,

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B)Metal

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C)Nonmetal

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