What brown substance in a cigarette causes lung cancer?

Name three radioactive elements Name three uses of radiation Deuterium is an isotope of hydrogen. What is meant by isotope?

A solution is preapred by dissolving 17.75 g sulfuric acid h2so4 in enough water make 100 ml of solution. what is the molarity

This element has more than 50 but less then 75 protons, and it is in group 17

What is the molar mass of PCL3

Consider the following generic chemical reaction: 2A+3B→3C How many moles of B are required to completely react with: 8 mol of A, 9 mol of A, 3 mol of A, and 10 mol of A?

What is solubility? 1) solubility is how much solute will precipitate out of solvent 2) solubility is how much solvent will dissolve in solute 3) solubility is how much solid only will dissolve in liquid only

Is burning of coal a reversible change? If yes how?

How many grams of tin are found in 3.5 moles of tin

Determine whether each statement is a description of a physical property or a chemical property. Paper burns readily in air.

Cual es la función de los lípidos?