When you dissolve covalent compounds in water, the molecules tend to stick together but if you dissolve ionic compounds in water, the formula units tend to disassociate. What can you infer about which type of bond is stronger?

Relate metallic bonds to the properties of metals.

An alcohol contains only C, H, and O. When a 1.50mg sample of the alcohol is burned completely in oxygen, 3.30mg of CO2 and 1.80mg of H20 are formed. What is the empirical formula for the alcohol?

How many molecules of hydrogen gas are present in a 750 ml container at STP?

Why don't roller coaster cars return to the same height at which they started? A. They are broken. B. They are safer this way. C. They transfer some of their energy into thermal energy and sound energy.

When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl2, how many moles of aluminum chloride are produced?

A cylinder contains oxygen at a pressure of 10.0 atm and a temperature of 300.0 K. The volume of the cylinder is 10,000 mL. What is the mass of oxygen gas?

4 - explicar as mudanças de estados fisicos da materia 6 - definir e exemplificar: -Ligações iônicas ou eletrovalente -Ligações covalentes ou molecular 7-definir substancias puras e suas clasificações 8-definir e exemplificar misturas homogeneas e

What ion forms when an acid is dissolved in a solution?

Suppose you found a material in which 12.5% of the original radioactive atoms were present. if the half-life is 47 years, how old is the material?

How many neutrons does xenon have?