Question

How many moles of sulfur atoms are there in 64 g of Sg? Select the correct answer below: O 2.0 moles O 1.3 moles O 0.56 moles O 0.25 moles

Answer 1

Given 64 we kmw that, no. ofmoles () = weght of svbrtance mola mAAS f wbtmce Sulpawr Kas molas mas 3 2 g/ mol S&As tota moleeul a weght (3 2x8) 256 /mo 64 256 = 2S Ans 2 no. o moles

Answer 2

To determine the number of miles, we must first divide the mass, in grams, by the molar mass of tge substance. Since we want to know the number of moles of sulfur atoms we must multi by 8 sulfur atoms. 64 grams S8 x 1 moles S8/256.528 grams x 8 moles S atoms/1 mole S8 = 2.0 moles of S atoms