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lisov135 [29]
2 years ago
13

Elements can be identified by their

Chemistry
2 answers:
AfilCa [17]2 years ago
7 0

Answer:

physical and chemical properties

Explanation:

Have a great day :D

NARA [144]2 years ago
3 0

Answer:

C) Physical and chemical properties

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Calculate the de Broglie wavelength of a body of mass 1 kg moving with a velocity of
skelet666 [1.2K]

Answer:

4.42 × 10⁻³⁷ m

Explanation:

Step 1: Given and required data

  • Mass of the body (m): 1 kg
  • Velocity of the body (v): 1500 m/s
  • Planck's constant (h): 6.63 × 10⁻³⁴ J.s

Step 2: Calculate the de Broglie wavelenght (λ) of the body

We will use de Broglie's equation.

λ = h / m × v

λ = (6.63 × 10⁻³⁴ J.s) / 1 kg × (1500 m/s) = 4.42 × 10⁻³⁷ m

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2 years ago
when applied to a dish soap makes grease soluble in water which explains correctly supports the role of intermolecular forces in
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The nonpolar end of a soap molecule attaches itself to grease.
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Which of the choices is an example of an element?<br> O CO<br> O Co<br> O C2H2O2<br> O CO2
alukav5142 [94]

Answer:

Co(cobalt) is the answer

Explanation:

Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.

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I’m sorry but I’m not good at chemistry, so I will not be able to help you.
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What type of energy involves the movement of charged particles
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Postive elctrons and atoms

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