A chemical reaction occurs when one or more change into one or more new substances called

What is the correct formula for chromium (3) oxide

Imagine you are handed a mineral sample. It breaks with a conchoidal fracture, but displays no cleavage. It does not react with hydrochloric acid, is a light pink color, and has a nonmetallic luster.

How to balance an unbalanced equation C6H6+O2 yields CO2+H2O

Some over-the-counter antacids contain aluminum hydroxide, whereas others contain calcium carbonate. If a tablet contains 750 mg of Al (OH) 3, and another contains 750 mg of CaCO3, which consumes the greater mass of HCl?

If consumers pay $15 for an apple pie from Lake Huron Pie Company and the cost "from field to table" of the pie is $10, which of the following identifies the value of the pie? A. $5 B. $10 C. $15 D. $25 and i guess u could call this mathmatics too

Suppose the average concentration of copper in water is measured to be 2.5 x 10" M. a. Express this concentration in mg/L. b. Express this concentration in ug/L. c.

If I add water to oil what will happen

Commercial fertilizers, which are made by humans, are used to enrich soil for healthier crops. However, erosion may carry the fertilizer chemicals to the oceans. The presence of these chemicals may cause certain kinds of algae to reproduce rapidly.

A cube of iron has a temperature of 35°C. It is placed on top of a hot surface with a temperature of 175°C. What will happen to the iron? A) Its temperature will decrease. B) Heat will flow from the hot surface into the iron.

Density differences cause the