You performed the reaction below and a total of 350 grams of HCI was reacted with zinc that was in excess. When you measure the amount of H2 gas that was
obtained at the end you got 9.5 grams. What is your percent yield? *
Zn + 2HCl -> ZnCl2 + H2

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?