What structures on the tongue are similar to olfactory cells

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that

37.0 °c = °f (human body normal temperature)