Why are the elements in groups 3 to 12 often used to make dyes?

How much heat is released when 15.7g of methane (c2h6) is combusted if the enthalpy of the reaction is - 1560.7 kj

Part b an "empty" container is not really empty if it contains air. how may moles of nitrogen are in an "empty" two-liter cola bottle at atmospheric pressure and room temperature (25∘c) ? assume ideal behavior.

Match each of the unknown ions to its appropriate description. Match Term Definition V3 - A) A nonmetal that gained one electron X - B) A nonmetal that gained three electrons Y + C) A metal that lost one electron Z3 + D) A metal that lost three

Who founded the terrorist organization al-Qaeda? A. Kim Jong Il B. Saddam Hussein C. Osama bin Laden D. Mahmoud Ahmadinejad

What is the transfer of electrons in Al + Cl = AlCl3

What is the Celsius equivalent of 212°f

Identify the characteristics of tornadoes and hurricanes

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?