What are the properties of elements related to?

A) the number of electrons that fill the outer shell

B) an element's symbol

C) the total number of electrons

D) the average atomic mass

While conducting an experiment using pyrophorics, it comes in contact with air and ignites. what kind of extinguisher should be available in the lab?

What is the molecular formula of the compound CH2 with molar mass = 168 g/mol?

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?

Which of the following groups contains reactive elements that need to gain only one electron to have a full outer energy level? alkali metals alkaline earth metals halogens noble gases

What is the purpose of the scale on a map?

A flask of fixed volume contains 1.00 mole of gaseous carbon dioxide and 88.0 g of solid carbon dioxide. the original pressure and temperature in the flask is 1.00 atm and 300. k. all of the solid carbon dioxide sublimes.

Oxygen is in group 16 of the periodic table. An oxygen ion (O2-) has a charge of - 2. Which of the following would be most likely to combine with an oxygen ion to form a new compound?

How and why - Why does ice float on water

Measurements show that enthalpy of a mixture of gaseous reactants decreases by 228. kJ during a certain chemical reaction, which is carried out at a constant pressure.

When 9.8 mol Fe react with 11.5 mol HCl, what is the limiting reactant and how many moles of H2 can be formed? unbalanced equation: Fe + HCl yields FeCl3 + H2 HCl is the limiting reactant, and 3.