How big is a mole?

• one mole of peas is enough to cover Earth and 250 more planets the same size as Earth one metre deep in green peas
  
  
• a stack of one mole of pennies is tall enough to reach Proxima Centauri (the second closest star to Earth) and back again 7448 times
  
  
• a mole of marbles spread over the Earth would cover it to a depth of 80 km
  
  
• if you own a mole of dollars and you spend a billion dollars a day, then you could spend that amount per day for over a trillion years before you run out of money. (Earth has only been around for 4.5 billion years i.e. that's 0.45% of a trillion years!)