What is the difference between mass number and atomic number

1. How many grams would 8.1 x 1021 molecules of sucrose (C12H22011) weigh?

If a neutral atom of beryllium has 4 protons and 5 neutrons, what is the mass number of the atom?

A mineral that has no planes of weakness in its lattice structure will not break along planes. Which term is appled to the way it breaks. A.) Splitering B.) Cleavage C.) Fracture D.) Cubing

Two elements in the second transition series (Y through Cd) have four unpaired electrons in their 3 + ions. What elements fitthis description?

Question In a molecule of chlorine (Cl2), the chlorine atoms are connected to each other by a single bond. :Ci - ci: Which statements correctly describe this bond? Select all the correct answers. It contains electrons from the first energy level.

How does a solid turn into a liquid

What does the Ka represent in the equation and why is it important?

Is an american alligator a autotroph?

A/1 * B/C = D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the local currency is the florin. The current exchange rate is 2 guilders for every 3 florins.

The burning of wood in a fireplace generates heat and light in the form of flames. Which of the following terms best describes this type of reaction? a. condensation reaction b. exergonic reaction c. endergonic reaction d.