What is the valency of Al2 in Al2O3

What would happen if NO were added to N (g) + O2=2NO (g) at equilibrium?

Given the balanced equation: 2 h2 (g) + o2 (g) → 2 h2o (l) how many grams of h2o are formed if 9.00 mol h2 (g) reacts completely with an excess of o2 (g) ? the molar mass of h2o is 18.0 g/mol.

Calculate the volume of concentrated 14.8 m ammonia required for the preparation of 3.1 g

Atoms of metallic elements can form ionic bonds, but they aren't very good at forming covalent bonds. why?

A Lay's potato chip weighing 4.03g is put into a bomb calorimeter containing 895.5g of water at 25.10°C. If this increases the temperature of the surrounding water to 48.89°C, what is the amount of calories per serving if 1 serving = 28.38g.

When group 17 elements become ions they have a charge of?

The first periodic table developed by Mendeleev was not completely accurate, but was a great step toward accomplishing the periodic table of elements we use today. Explain how the modern periodic table is credible today because of Mendeleev's work.

For the reaction represented by the equation 2hno3 + mg (oh) 2® mg (no3) 2 + 2h2o, how many grams of magnesium nitrate are produced from 8.00 mol of nitric acid, hno3, and an excess of mg (oh) 2?

What type of bond is between sodium and oxygen

How are today's field galaxies different than distant ones?