2. Demostraron que las sustancias aisladas por Karl Sheele contenían como elemento común ał carbono

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

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