Use the ideal Gas Law to calculate the number of moles (n) of helium in a
4000 Liter weather balloon near the top of Mt. Rainier with a pressure of
0.6 atm and temperature of 260K.*

0.0089 mol

7,600,000 mol

2400 mol

0236.9 mol

112.6 mol

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.