Saltpeter is a compound made of potassium (K), nitrogen (N), and oxygen (O). Every 100.0g of saltpeter contains 38.67g potassium and 13.86g nitrogen. What is the mass of oxygen contained in 285.0mg of saltpeter? Answer needs to be in grams

Which pair of atoms is most likely to be covalently bonded? 1) Na and O 2) K and F 3) Ne and O 4) C and S

Which element's atomic radius changes the most in size when it becomes ionized?

Which element belongs to the P^6 - block of the periodic table

What are valency and radicals

Which is an example of a non aqueous solution gasoline fog mayonnaise fruit juice

1. the purpose of the aqueous solutions in a galvanic cell is to? a. provide ions to be oxidized and reduced b. provide a path for the free flow of electrons c. maintain charge balance in the cell d. correct any volume changes in the cell 2.

A. Identify which of the following substances dissolve in water, explaining why for each example: CH4, He, MgSO4, NaHCO3 b.

Hydrogen is a pure substance represented by the chemical symbol h. which of the following best describes hydrogen a. hydrogen is a compound made of only one kind of atom. b. hydrogen is a compound made of two or more kinds of atoms. c.

How to assign oxidation and reduction numbers

How to tell difference between hydrogen gas and oxygen gas?