1. If the distance from the earth to the moon is 3.82 x 10^8 m, how many times could the paper stack reach to the MOON AND BACK? 1 mole of papers=1.505E20

To find out how many times a stack of papers could reach to the moon and back, we need to calculate the total distance covered by the stack and then compare it to the distance from the Earth to the moon.

First, let's calculate the total distance covered by the stack of papers. We know that 1 mole of papers is equal to 1.505E20 papers.

Since the distance from the Earth to the moon is given as 3.82 x 10^8 meters, the distance covered by the stack to reach the moon and come back is twice that distance, which is 2 * 3.82 x 10^8 = 7.64 x 10^8 meters.

Now, we need to find out how many times the stack of papers can cover this distance. We know that 1 mole of papers is equal to 1.505E20 papers, so we can set up a conversion:

1.505E20 papers = 7.64 x 10^8 meters

To find out how many times the stack of papers can reach to the moon and back, we divide the total number of papers (1.505E20) by the distance covered by the stack (7.64 x 10^8):

(1.505E20 papers) / (7.64 x 10^8 meters) = 1.9722 x 10^11

Therefore, the stack of papers could reach to the moon and back approximately 1.9722 x 10^11 times.

Please note that this calculation assumes that the stack of papers is stacked vertically in a straight line and does not take into account any variations in paper size, weight, or other physical factors.