What 3 atoms have eight valence electrons

g Assuming that the specific heat of the solution is 4.18 J / (g⋅∘C), that its density is 1.00 g/mL, and that the calorimeter itself absorbs a negligible amount of heat, calculate ΔH in kilojoules for the reaction.

Unit about 200 million years ago, Earths continents were joined asa single land mass called

Why was Chernobyl built? I don't need to know what happened, I just need to know WHY it was built.

3 NO2 (g) + H2O (ℓ) - → 2 HNO3 (ℓ) + NO (g) If 716 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the same conditions. Answer in units of L.

The valence electrons found in metallic bonds give metals which characteristics? A. Conductivity B. Free-roaming electrons C. The ability to form covalent bonds D. Electrons that lack movement (There are more than one)

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2

What mass of copper is required to replace silver from 4. oog ogre silver nitrate dissolved in water

What kind of bond would two nonmetals typically make?

Which statement best applies collision theory to preventing a dangerous reaction from occurring? Store the reactants together at a low pressure. Keep all sparks or flames away from the reactants. Store the reactants together at a low temperature.