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kykrilka [37]
3 years ago
10

Each year, the science club puts on a science show for the students in the elementary school. Luis is planning demonstrations to

show properties of metals. For one property, he decides to use a ball of pizza dough and a rolling pin. Which property of metals is Luis most likely going to demonstrate using these materials
Chemistry
2 answers:
Luda [366]3 years ago
7 0

Explanation:

Metals are the elements which contain more number of electrons.

Some properties of metals are as follows.

  • Metals have shiny surface.
  • Metals are malleable, i.e, they can be drawn into thin sheets.
  • Metals are ductile, i.e, they can be drawn into thin wires.
  • Metals have high melting and boiling point.

Thus, when Luis decides to use a ball of pizza dough and a rolling pin then it represents the property of malleability, that is, with the help of rolling pin pizza dough can be drawn into thin sheet.

Harlamova29_29 [7]3 years ago
6 0

Mallebility, I got it right on the unit test.

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The best and most correct answer among the choices provided by the question is the second choice.

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Answer:

713 nm. It is not visible with the naked eye.

Explanation:

Step 1: Given data

  • Energy of light (E): 2.79 × 10⁻¹⁹ J
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We will use the Planck-Einstein equation.

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λ = 6.63 × 10⁻³⁴ J.s × 3.00 × 10⁸ m/s / 2.79 × 10⁻¹⁹ J

λ = 7.13 × 10⁻⁷ m

Step 3: Convert "λ" to nm

We will use the relationship 1 m = 10⁹ nm.

7.13 × 10⁻⁷ m × (10⁹ nm/1 m) = 713 nm

This light is not in the 400-700 nm interval so it is not visible with the naked eye.

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