Consider an electrochemical cell constructed from the following half cells, linked by an external circuit and by a kcl salt bridge. • an al(s) electrode in 1. 0 m al(no3)3 solution • a pb(s) electrode in 1. 0 m pb(no3)2 solution the balanced overall (net) cell reaction is.

The y-value if a data point corresponding to x1

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?