What is the correct name for CoCI2?

You find a penny with a mass of 2.50 g and a volume of 0.339 cm3. is this penny pure copper? (the density of copper is 8.96 g/cm3)

Which of the following is true about about sodium chloride? Substance calcium carbonate iron oxide Chemical Formula Caco Feo MgSio magnesium silicate Sio silicon dioxide sodium chloride Naci It is made up of 2 elements O It is made up of 3 elements

What is a physical change? new substance no new substance both substances neither substance

Predict how many grams of KCI is produced from 40 grams of K?

Which of the following is true about a scientific theory? a. a theory is a proposed explanation for a hypothesis b. a theory can be changed to explain new observations or experimental results c. a theory can be formed after a single experiment d.

Each enzyme has an optimal temperature and pH that it works best in. If enzyme ABC works best at pH 7, but ABC is in a cell with a pH of 9, will it catalyze more or less reactions?

What is the molarity of a solution that contains 5.0 moles of solute in 2.0 liters of solution?

Area immediately surrounding a hazardous material incident which extends far enough to protect personnel outside the zone from contamination.

What is the smallest part of a tree that can do all the things needed for life?

What are solid mixtures in a avarage class