R = 2.18x10-18 J; h = 6.626x10-34 J•sec or 6.626x10-34 kg•m2 sec-1;
c = 3.00 x 10 8 m•sec-1; 1eV= 1.602x10-19 J
a.) What is the energy of a photon with a wavelength of 335 nm?
b.) If a metal that has a work function of 2.80 eV, what wavelength of light is required to generate electrons with a kinetic energy of 1.02 eV?
c.) If a reaction is exothermic, does it mean that ΔE for the reaction is negative? Explain.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Photoelectric Effect concept. You can view video lessons to learn Photoelectric Effect. Or if you need more Photoelectric Effect practice, you can also practice Photoelectric Effect practice problems.
What is the difficulty of this problem?
Our tutors rated the difficulty ofR = 2.18x10-18 J; h = 6.626x10-34 J•sec or 6.626x10-34 kg•m...as high difficulty.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Weber's class at UNT.