^{5}Pa.

**Problem:**

The pressure under the ocean increases roughly 0.1 atm per meter. At 1 km, the water pressure is 99.136 atmospheres. What is this pressure in pascals?

**Solution:**

1 atm = 1.01325 x 10

^{5}Pa

Set up the conversion so the desired unit will be cancelled out. In this case, we want Pa to be the remaining unit.

pressure in Pa = (pressure in atm) x (1.01325 x 10

^{5}Pa/1 atm)

pressure in Pa = (99.136 x 1.01325 x 10

^{5}) Pa

pressure in Pa = 1.0045 x 10

^{7}Pa

**Answer:**

The water pressure at a depth of 1 km is 1.0045 x 10

^{7}Pa.