2 points In a balloon filled with air (about 80% nitrogen and 20% oxygen), the
pressure in the balloon could be described as
zero
the sum of the pressures produced by nitrogen and oxygen
the pressure exerted by nitrogen
the pressure exerted by oxygen

If the mass of the products measured 120g what would the mass of the reactants a. 30g b. 60g c. 120g d. 240g

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Which of the following units is not an official si unit? mole liter kilogram ampere