How many moles of each element are in one mole of (NH4)2S? 1 mole of nitrogen, 8 moles of hydrogen, 1 mole of sulfur
O 1 mole of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
2 moles of nitrogen, 6 moles of hydrogen, 1 mole of sulfur
2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

i believe the answer is true.