Aballoon is filled with helium at sea level. the volume was measured to be 3.1 liters at a pressure of 0.97 atm. if the balloon is released, it drifts upward. at a height of 4 kilometers, the pressure is measured to be 0.61 atm. what is the new volume of the balloon? 0.19 l 1.9 l 4.9 l 5.0 l

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?

Which type of fossil does this image depict?