What are the defining characteristics of matter

What is one way to increase the dissolution rate of a sugar cube? a) crush the sugar cube into smaller pieces b) add more sugar cubes to the solvent c) increase the pressure on the solution d) decrease the temperature of the solution

How many electrons are in the highest occupied energy level of a group 5A element? a. 4 c. 5 b. 6 d. 7

How many independent variables can you have in an experiment for it to be valid?

What type of chemical reaction is 4Fe+3O2→2Fe2O3? A) synthesis B) decomposition C) double-displacement D) single-displacement

Chang works as a materials scientist for a paint manufacturer. He has developed a material that does not work well in paint, but it could have applications as a deck sealant.

2 CO (g) + O2 (g) → 2 CO2 (g)

3h2 (g) + o3 (g) 3h20 (g) arrow after the o3 (g) whats the overall enthalpy?

For the reaction represented by the equation cl2 + 2kbr ® 2kcl + br2, calculate the percentage yield if 200. g of chlorine react with excess potassium bromide to produce 410. g of bromine.

The surface area and depth of the Pacific Ocean are 1.8 X 10^8 km^2 and 3.9 X10^3 m respectively, Calculate the volume of the Pacific Ocean in liters.

Find the molarity of HCl from neutralization of NaOH+HCl I have 9.82mL of HCl and 14.44mL NaOH. The molarity of NaOH is. 5M