The mass of an evacuated 255-mL flask is 143.187 g. The mass of the flask filled with 264 torr of an unknown gas at 25 ∘C is 143.287 g . Calculate the molar mass of the unknown gas.

Which is the most concentratic acid

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

In a covalent bond, two atoms are held together by the attraction between . the number of covalent bonds that an atom can form depends on the number of in the atom.