What mass of Na is needed to react with H2O to liberate 165 L H2 gas at STP, accord- ing to the equation below? 2 Na(s) + 2 H2O(l) - H2(g) + 2NaOH(aq)

Answer in units of g. Your answer must be within + 3.0%​

Which of the following might a chemist choose to study? a. glacier movement in alaska b. better ways to recycle plastics c. the effects of hurricanes on turtle populations d. the vibrations in bridges caused by big trucks

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.