Why is the atomic mass of most elements not a whole number?

To survive and advance, humans have used the natural resources in their environment for at least as long as recorded history.

19. When an atom of iron loses all of its 4s electrons and one of its 3d electrons, what is its charge?

What is the main energy conversion that occurs when you plug in a lamp

What state is lake erie

Name the following compound: CH3 - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH3

The volume coefficient of thermal expansion for gasoline is 950 * 10-6 K-1. By how many cubic centimeters does the volume of 1.00 L of gasoline change when the temperature rises from 30°C to 50°C?

An element's most stable ion forms an ionic compound with bromine, having the formula XBr. If the ion of element X has a mass number of 85 and has 36 electrons, what is the identity of the element?

How many molecules are in 3 moles of Fe2O3?

What terms are needed to completely describe velocity ... A. units B. number C. mass D. direction

How many grams are in 3.3 moles of potassium sulfide, k2s