General Chemistry | Calculating Frequency (λ), Wavelength (𝝂), & Energy

This video tutorial covers the fundamental calculations in general chemistry involving wavelength, frequency, and energy of photons. It explains how to calculate energy from frequency using Planck's constant, how to determine wavelength from frequency using the speed of light, and how to calculate energy from wavelength. The tutorial also introduces the necessary constants and units, providing step-by-step solutions to example problems.

What are the three key concepts you need to calculate in general chemistry exams related to photons?

• Wavelength, frequency, and energy

• Mass, volume, and density

• Speed, velocity, and acceleration

• Temperature, pressure, and volume

Which constant is used to calculate the energy of a photon from its frequency?

• Planck's constant

• Boltzmann's constant

• Gravitational constant

• Avogadro's number

What is the unit of frequency when calculating the energy of a photon?

• Joules

• Hertz

• Meters

• Seconds

What is the formula used to calculate wavelength from frequency?

• λ = c/ν

• E = hν

• F = ma

• P = IV

What is the approximate value of the speed of light used in calculations?

• 3.0 x 10^8 meters per second

• 6.626 x 10^-34 meters per second

• 9.8 meters per second squared

• 1.6 x 10^-19 meters per second

How do you convert a wavelength from nanometers to meters?

• Divide by 10^-9

• Multiply by 10^-9

• Divide by 10^9

• Multiply by 10^9

Which formula combines Planck's constant and the speed of light to calculate energy from wavelength?

• E = hν

• E = mc^2

• E = hc/λ

• E = 1/2 mv^2