1.Suppose you neglected to remove all the unreacted zinc from the reaction mixture. How would this affect the calculated percent yield of copper? Explain

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?