A piece of metal weighing 73.5 g is heated to a temperature of 98.7°C. The metal is then placed in 1500.0 g of water at a temperature of 25.4°C.  The temperature of the water increases to a final temperature of 28.2°C.  What is the specific heat of the metal? (specific heat of water = 4.184 J/°C *g)  qgained = -qlostq = mc∆T

The percent composition of carbon in  C2H6  is 21.9%.

Which of the following compounds would have the highest boiling point?

A ________ of particles (atoms, molecules, ions, etc) is equal to Avogadro s number, _______.

Name the following acid.HNO3 (aq)

 An instant cold pack works by dissolving ammonium nitrate into water. These cold packs use an ________ process to create the sensation of cold.

Which of the following are the spectator ions in this reaction? KCl (aq) + AgNO3 (aq) –> Hint: draw out the products first

The system is the substance undergoing the chemical or physical change, while the surroundings either provide heat to or absorb heat from the system.

A species that is oxidized is also the oxidizing agent.

An arrow in a chemical reaction indicates a change from the reactants to products.