Author: Anonymous

There are ________ protons, ________ neutrons, and ________ electrons in 19F.      

What is the formula mass of CaCO3?

What are the percent by mass–volume of the solutes in the following solutions?    90 g of sodium chloride in 1.5 L of solution

Which of the following is not a combination reaction?

In the periodic table, horizontal row is called a __________. A vertical column is called a _____________. [e1ecf8f3-b7ee-4ab6-b6d5-a498af51c1e3] [d0f368ac-4158-408e-83b8-886c8beaacdf]

Now, lets convert 5 moles of H2O in grams. (pay attention to the number of oxygen and hydrogen atoms, H:1 g/mol and O: 16 g/mol)

Whats is the maximum number of electrons permitted in each of the following energy levels;   2nd energy level, ___ 5th  energy level, ___

Even though mercury (Hg) is liquid, it is a metal.   

When you balance the following reaction, what’s the sum of all the coefficients?   C5H12 + O2——CO2 + H2O 

Classify each of the following as an element, compound, or mixture