20 points A compound containing sodium and fluorine has a total mass of 364.0
grams. If the compound contains 120.0 grams of sodium, what is the
percent by mass of fluorine in the sample? *
52.0% fluorine
33.0% fluorine
67.0% fluorine
46.0% fluorine

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays