The element P has an atomic number of 15 and an atomic mass of 31. Which statement has the correct number of protons, electrons, and neutrons?

Why are people not able to scuba dive in the deep part of the ocean

Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule