An H

Queens College of the City University of New York

SAT Volunteer Tutor

Biography

My name is

Education

BS biology

Queens College of the City University of New York

Educator Statistics

Numerade tutor for 6 years

8 Students Helped

Topics Covered

Understanding Chemical Equilibrium: A Comprehensive Guide

Acid-Base Equilibria: Understanding the Balance

Aqueous Equilibria: Understanding the Balance of Solutions

Atoms, Molecules, and Ions: Understanding the Building Blocks of Matter

Understanding Electronic Structure: A Comprehensive Guide

an's Textbook Answer Videos

World of Chemistry

Why is pouring grain into a silo a potentially explosive process? Use the collision theory in your explanation.

Chapter 17: Equilibrium

Section 1: Reaction Rates and Equilibrium

Chemistry and Chemical Reactivity

Answer the following questions based on Figure 7.3 :
(a) Which type of radiation involves less energy, x-rays or microwaves?
(b) Which radiation has the higher frequency, radar or red light?
(c) Which radiation has the longer wavelength, ultraviolet
or infrared light?

Chapter 7: Atomic Structure

Chemistry and Chemical Reactivity

Traffic signals are often now made of LEDs (lightemitting diodes). Amber and green ones are pictured here.
(a) The light from an amber signal has a wavelength of $595 \mathrm{nm},$ and that from a green signal has wavelength of 500 nm. Which has the higher frequency?
(b) Calculate the frequency of amber light.
(FIGURE CAN'T COPY)

Chapter 7: Atomic Structure

Chemistry and Chemical Reactivity

Green light has a wavelength of $5.0 \times 10^{2} \mathrm{nm}$. What is the energy, in joules, of one photon of green light? What is the energy, in joules, of 1.0 mol of photons of green light?

Chapter 7: Atomic Structure

Chemistry and Chemical Reactivity

The most prominent line in the spectrum of aluminum is at $396.15 \mathrm{nm} .$ What is the frequency of this line? What is the energy of one photon with this wavelength? Of 1.00 mol of these photons?

Chapter 7: Atomic Structure

Chemistry and Chemical Reactivity

Place the following types of radiation in order of increasing energy per photon:
(a) yellow light from a sodium lamp
(b) $x$ -rays from an instrument in a dentist's office
(c) microwaves in a microwave oven
(d) your favorite FM music station at $91.7 \mathrm{MHz}$

Chapter 7: Atomic Structure

1 2