Balance this chemical equation

K₂S + CocI2 KCl + Cos

Is mixing food coloring with water a chemical or physical change?

The number of dots around an element symbol in a lewis dot structure equals the total number of electrons in an atom of that element. true false

Which of these is a body fossil? A. shrimp burrow B. Plant Imprint C. Claw Print D. dinousaur egg

Which material is the least likely to be recognized as a mixture by looking at it under a microscope?

When methane is burned with oxygen the products are carbon dioxide and water. if you produce 36 grams of water and 44 grams of carbon dioxide from 16 grams of methane, how many grams of oxygen were needed for the reaction?

Which statement about Clinton s impeachment is true? A. Clinton s impeachment was supported by the majority of Americans. B. The impeachment charges were based on fraud found during the Whitewater investigation. C.

When the equation ZnS+O ZnO+SO isbalanced the coefficientof O is 1, 5, 3, or2

Radioactive elements decay at a know rate known as half-life. Choose all of the correct statements concerning half-life. Carbon-14 has a half-life of 5,730 years. A 30 gram sample will be 10 grams after 5,730 years.

I am the most reactive metal in Period 4.

Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. titanium tetrachloride (ticl4) is extracted from titanium oxide using chlorine and coke (carbon). if you begin with 1.