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Dafna1 [17]
3 years ago
10

The mass of a solid substance is 21.112 g. If the volume of the solid substance is 19.5 cm3, calculate the density of the substa

nce (in g/cm3) with the correct number of significant digits. The density is g/cm3.
Chemistry
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

ρ = 1.08 g/cm³

Explanation:

Step 1: Given data

Mass of the substance (m): 21.112 g

Volume of the substance (V): 19.5 cm³

Step 2: Calculate the density of the substance

The density (ρ) of a substance is equal to its mass divided by its volume.

ρ = m / V

ρ = 21.112 g / 19.5 cm³

ρ = 1.08 g/cm³

The density of the substance is 1.08 g/cm³.

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In compliance with conservation of energy, Einstein explained that in the photoelectric effect, the energy of a photon (hv) abso
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Answer:

 a) 1.866 × 10 ⁻¹⁹ J      b)   3.685 × 10⁻¹⁹ J

Explanation:

the constants involved are

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a) the Ek ( kinetic energy of the dislodged electron) = 0.5 mu²

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n - amount of substance.
M - molar mass.
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