Obtain a large, plastic syringe and draw 25 mL of water into it. Eliminate any bubbles of air. Place the opening of the syringe securely against a rubber stopper or cork. Push down on the plunger of the syringe without allowing water to leak from the syringe. Describe how the volume of the water changes with an increase in pressure. Here is a video of this process:

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.