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alexabdercmur
03.12.2021 •
Chemistry
Please help me I don’t know this
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Ответ:
aplha particle is the answer
Ответ:
1.3 × 10²⁵ atoms
Explanation:
Step 1: Calculate the volume of an apple
The radius of an apple is 3.5 cm (3.5 × 10⁻² m). If we assume it is a sphere, we can calculate its volume using the following expression.
V = 4/3 × π × r³
V(apple) = 4/3 × π × (3.5 × 10⁻² m)³ = 1.8 × 10⁻⁴ m³
Step 2: Calculate the volume of 1 atom
The radius of 1 atom is 1.5 A (1.5 × 10⁻¹⁰ m). If we assume it is a sphere, we can calculate its volume using the following expression.
V = 4/3 × π × r³
V(atom) = 4/3 × π × (1.5 × 10⁻¹⁰ m)³ = 1.4 × 10⁻²⁹ m³
Step 3: Calculate how many atoms are in 1 apple.
V(apple)/V(atom) = 1.8 × 10⁻⁴ m³/1.4 × 10⁻²⁹ m³ = 1.3 × 10²⁵