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The correct option would be 'electrons'
This is because electrons have a relative mass of zero.
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for one you could do a bell, ringing noise, then say someone rang it.
For two you could do tunnel, echoing, then say someone yelled and it echoed.
for three you could do a bowl, ringing, spoon hitting it
hope i could help
Answer:
The scientific study of the atmosphere and of atmospheric conditions, especially as they relate to weather and weather forecasting.
According to Beer-<span>Lambert law the absorption of light by a solution is directly proportional to the concentration of that solution.
Mathmatically,
A = </span>∈ C l ------- (1)
Where,
A = Absorption = 1.23
∈ = molar absorptivity coefficient = 6460 M⁻¹cm⁻¹<span>
C = Concentration = ?
l = Path Length = 1 cm
Solving eq.1 for concentration,
C = A / </span>∈ l
Putting values,
C = 1.23 / (6460 M⁻¹cm⁻¹ × 1 cm)
C = 0.00019 mol/L
