The weather changed from cold to warm. Jessica was excited because should could wear her new flip flops and shorts to school. She had her science laboratory later in the day. What should she do to be safe?

A take clothes and shoes to school that cover her up
B put on her laboratory coat so it covers her shorts, and wear goggles
C wrap herself in a fire blanket so it covers her body
D remove her shoes so no chemicals get in them

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?