3. How many grams does one O₂ molecule weigh? 4. Calculate the H₂S number of protons, electrons, and neutrons per molecule

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

Write the correct abbreviation for each metric unit

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane