Give the chemical symbol of an element in the third period (row) of the periodic table with three valence electrons. Express your answer as a chemical symbol

Do all the atoms have zero oxidation number in their natural states?

What is the atomic symbol for Z=26, A=54

Is beer a mixture or compound?

What are some expirements to determine if a compound is covalent or ionic?

10 molecules SO2 to moles

What do nucleus act as

Change of state may occur when?

During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°c. the specific heat of water is 4.18 j/g·°c. how much heat did the reaction generate?

Catalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous (same state as reactants) or heterogeneous (different state than reactants).

How many molecules are there in 79g of Fe2O3?