A solution of KNO3 in water is prepared for which the following data have been obtained 1. masses of solute and solvent 2. molar masses of solute and solvent Which of these quantitative descriptions of the solution can be determined? l. molarity Il. molality Ill. density aonly O b. l. and I. only O c. I. only O d. lI. and lL only e. l. only Moving to another question will save this response. Mac Fl F2 F4 F5 4

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

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 .

Mr. rose asked his student to draw a quadrilateral with four unequal sides. an example of this kind of quadrilateral