Is tap water a mixture or a pure substance

When a quantity of electricity is converted to heat, what is the heat energy produced measured in

Use the data in the table above to calculate an approximate ΔH∘ in kilojoules for the synthesis of hydrazine from ammonia: 2NH3 (g) + Cl2 (g) ⟶N2H4 (g) + 2HCl (g) Express your answer to two significant figures and include the appropriate units.

Why do certain types of honey rarely crystallize?

What is the very thick liquid called which is found deep underground and is refined before use?

A large marble is dropped in a graduate cylinder with 35ml of water in it. The water level increases to 49ml. what is the volume of the marble?

All of the following can be recycled except clothing aluminum cans compact fluorescent bulbs plastic drink bottles

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.0 L of water upon warming from 25 ∘C to 50 ∘C.

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure.

When you light a fire place what energy transformation takes place

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB