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3 years ago

What type of energy is converted when fireworks relese heat,light,and sound

2 answers:

5 0

The fireworks contain potential chemical energy, which transforms into “kinetic energy to send the rocket skyward; some [chemical energy] compresses the air rapidly, producing sound and still more energy is transformed into light of many colors”

So I'd say chemical energy is converted to kinetic energy.

shutvik [7]3 years ago

3 0

Rockets, aerial shells, mines, cakes, firecrackers, wheels, fountains (gerbs), lancework, Roman candles and sparklers.

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calculate the molality of commercial HCl solution which is 12.1Molarity, and has a density of 1.19g/mL, and is 37.2wt.%HCl.

shutvik [7]

Answer:

0.44165 Molal

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4 years ago

What forces hold molecule solids together

quester [9]

Answer:

Intermolecular forces

Explanation:

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4 years ago

write a chemical equation for the ionization of water. how do you indicate that this is a reversible action?

LiRa [457]

H₂O + H₂O ⇌ H₃O⁺ + OH⁻

You use two single-barbed arrows pointing in opposite directions (technically rightwards harpoon over leftwards harpoon) <em>to indicate a reversible reactio</em>n.

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4 years ago

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Answer: It's the anode broski (B)

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3 years ago

PLEASE URGENT I will give MOST POINTS POSSIBLE For the following reactions, (a) write the balanced reaction equations and (b) ID

Tema [17]

Answer:

see below

Explanation:

Aqueous hydroiodic acid reacts with liquid water in a reversible reaction.

2 HI + 2 H₂O ⇔ 2 H₃O + I₂

This is an acid-base reaction. HI is the acid, and H₂O is the base. The conjugate acid is H₃O, and the conjugate base is I₂. You can figure out the acid and base by a using a table of strong/weak acids and bases. The conjugate will have one less or one more H⁺ depending on if it's an acid or a base.

The expression for Kₐ of the reaction is below. You have to put the acid and its conjugate base on the top and the base and its conjugate on the bottom. I didn't put in H₂O since, although it is the base in this equation, it isn't really a base.

$K_{a}=\frac{[HI][H_{3}O] }{[I_{2}] }$

Solid zinc reacts with solid manganese (IV) oxide producing solid zinc oxide and solid manganese (III) oxide.

Zn + 2 MnO₂ ⇒ ZnO + Mn₂O₃

This is a redox reaction. The Zn is being oxidized, and the Mn is being reduced.

Oxidation: Zn ⇒ Zn⁺² + 2 e⁻

Reduction: Mn⁺⁴ + e⁻ ⇒ Mn⁺³

Aqueous silver nitrate reacts with aqueous calcium chloride.

2 AgNO₃ + CaCl₂ ⇒ 2 AgCl + Ca(NO₃)₂

This is a precipitation reaction. You have two soluble salts combing to form a solution. You now need to figure out which of the compounds produced are not soluble. AgCl is the compound that is not soluble in water, making it the precipitate.

I think I covered everything. If I missed something let me know.

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3 years ago