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The element, Angelanium (An), named after the CHM 113 TA who discovered it while working at ASU, has three naturally occurring isotopes. The masses and % natural abundances of these isotopes are shown in the table below: What mass should be listed on the periodic table for this element?

Which dead scientist was able to determine the charge and mass of an electron by irradiating oil droplets with x-rays and observing their fall in a chamber?

Determine the probability that a randomly selected bunch of bananas will weigh between 3.6 and 4.2 pounds?

Americium-241, used in smoke detectors, creates a steady electrical current due to its radioactivity. When smoke particles disrupt this current, it triggers the alarm.  How many neutrons are there in one atom of this isotope, 241Am?

The element, Indrajitium (Id), named after the CHM 113 lab instructor who discovered it while working at ASU, has three naturally occurring isotopes. The masses and % natural abundances of these isotopes are shown in the table below: What mass should be listed on the periodic table for this new element?

What is the oxidation number of the chlorine atom in the compound, KClO3?

Paying attention in lecture question! In Lecture Quiz #2, we explored the property of density by examining a clip from Indiana Jones and the Raiders of the Lost Ark.  In the clip, Indy tries to steal a gold statue by replacing it on a pedestal with another object.  What was this object?

What is the minimum amount of time a professor must spend grading for the time to fall in the top 10% of all exam grading times?

How many nitrogen atoms are there in 10 g of NH4NO3?

How many protons, neutrons, and electrons are there in one atom of 63Cu?