Which of the following elements have unstable electron shells?

A. Hydrogen (H)

B. Chlorine (Cl)

C. Calcium (Ca)

D. All of these

Is filtration physical or chemical

Potassium chlorate decomposes to potassium chloride and oxygen. If 20.8 g of potassium chlorate decomposes, how many liters of oxygen will form at STP?

How does one determine an empirical formula from a percent composition apex?

Calculate delta g reaction at 298 k under the conditions 2hg+o2

Which substance was developed by chemists? A) silk B) nylon D) aspirin

A piece of iron can change in different ways. How is iron bending different from iron rusting?

Which organism would least likely be selectively bred A) Dandelions B) Nantes Carrots C) Belgian Blue Cattle D) Hypoallergenic Cats

You are given a clear solution of KNO3. Using 3-4 sentences explain how you would determine if the solution is unsaturated, saturated, or supersaturated

Which element combination (s) would result in electrons being shared? [] sodium (Na) and oxygen (O) [] carbon (C) and fluorine (F) [] oxygen (O) and hydrogen (H) [] aluminum (Al) and chlorine (Cl)

If you start with 4 moles of iron and 3 moles of oxygen to produce iron oxide, what is the limiting reagent? (You will need to balance the equation first.) Fe + O2 - > Fe2O3