An evacuated glass vessel weighs 50 g when empty, 148 g when filled with a liquid of density of 0.98 g/cc and 50.5 g when filled with an ideal gas at 760 mm Hg at 27° C. Calculate the number of molecules present in 12.3 g of the gas.

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely

Examine the false statement. compounds are the smallest unit of an element that occur most commonly in nature. select the rewording of the statement that is true. a: atoms are the smallest unit of an element that commonly occur in nature. b: molecules are the smallest unit of an element or compound that commonly occur in nature. c: molecules are the smallest unit of a compound that occur on the periodic table. d: compounds are the smallest unit of an element that occur on the periodic table