Hello user can you help me out thanks! list the following items from smallest to largest

Grain of salt
E. coli bacteria
human
water molecule
skin cell

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2