Question

How many moles of potassium are contained in 449 g of potassium? 23.9 moles 11.5 moles 2.14 moles 29.9 moles 14.5 moles

Answer 1

There are 11.5 moles of potassium contained in 449 g fundamental units of potassium. therefore,

option B is correct.

A mole is the mass of a substance made up of the same number of fundamental components. Atoms in a 12-gram example are identical to 12C. Depending on the substance, the fundamental units may be molecules, atoms, or formula units.

Atomic weight 39.1 is assigned to potassium (chemical symbol K).

K content in a 449g sample is equal to

                                  =given weight / atomic weight

                                  =449/39.1

                                  = 11.5mol.

A 449g sample has 11.5 moles of potassium.

Learn more about fundamental units here-

brainly.com/question/13435862

#SPJ4