What is an Independent variable, a dependent variable, and a controlled variable?

What is the molar mass of PbCO4

We eat food for energy. What is the source of energy for this food chain?

What are Alkaline earth metals?

In a crystal lattice of an ionic compound, A. Kind of a given charge are clustered together B. Ions are surrounded by ions of the opposite charge C. A sea of electrons surrounds the ions D. Neutral molecules are present

The KM is:A) equal to the product concentration at initial reaction conditions. B) equal to the substrate concentration when the reaction rate is half its maximal value. C) proportional to the standard free energy. D) All of the above.

Which statement describes a physical change? a. A carton of milk souring b. A piece of silver flatware tarnishing c. Dry ice subliming into carbon dioxide d. Two clear solutions forming a precipitate when mixed

What are two types of local winds?

For a given reaction, adding a catalyst increases the rate of the reaction by (1) providing an alternate reaction pathway that has a higher activation energy (2) providing an alternate reaction pathway that has a lower activation energy (3) using

An element which forms an oxide that dissolves in water to form an acidic solution.

Milk of magnesia is a base. What happens when you drink milk of magnesia for an upset stomach? A) It raises the pH of your stomach. Eliminate B) It lowers the pH of your stomach. C) It cleanses the stomach of harmful, painful bacteria.