PLEASE HELP ME A galvanic cell consists of an SHE ( as the left - hand electrode ) with standard potential equals to -0.76 volt . It has a rod of zinc dipping into a solution of zinc ions at 298 K gave measured emf of -0.789 volt . What is the activity of the zinc ions?
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Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves