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Lapatulllka [165]
4 years ago
8

What is a level 7-8 grade science fair project I can do?

Chemistry
1 answer:
Delicious77 [7]4 years ago
4 0
Making an atom or a virus structure
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During the lab, you measured the pH of mixtures containing strong acid and strong base. Write net Brønsted equations that show t
jasenka [17]

Answer:

ClO⁻ + HC₂H₃O₂ ⇄ HClO + C₂H₃O₂⁻

Explanation:

Sodium hypochlorite is a strong electrolyte that ionizes in sodium cation and hypochlorite anion.

NaClO(aq) ⇒ Na⁺(aq) + ClO⁻(aq)

ClO⁻ is a base that reacts with acetic acid (HC₂H₃O₂) from vinegar (neutralization reaction).

ClO⁻ + HC₂H₃O₂ ⇄ HClO + C₂H₃O₂⁻

7 0
3 years ago
Who was the first person to suggest the existence
katrin2010 [14]

Answer:

democritus is the first person

3 0
2 years ago
El osmio es un metal sólido que tiene una densidad
pentagon [3]

Respuesta:

4.42 × 10⁻⁶ m³

Explicación:

Paso 1: Información provista

  • Densidad del osmio (ρ): 22600 kg/m³
  • Masa de osmio (m): 100 g

Paso 2: Convertir 100 g a kilogramos

Usaremos el factor de conversion 1 kg = 1000 g.

100 g × 1 kg/1000 g = 0.100 kg

Paso 3: Calcular el volumen ocupado por 0.100 kg de osmio

La densidad es una propiedad intensiva, igual al cociente entre la masa y el volumen.

ρ = m/V

V = m/ρ

V = 0.100 kg / (22600 kg/m³) = 4.42 × 10⁻⁶ m³

5 0
3 years ago
Please help #18 PLEASE!!!
natka813 [3]
Well first off they can stop dumping harmful chemicals in our oceans.
Second, they could just limit the use of factories . May sound stupid but it works

Hope this helps!
5 0
4 years ago
How interactions cause substance to boil at different tempurtures
Nata [24]
The surface area is a big help
3 0
3 years ago
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