Homework Statement
The henry's law constant (k) for carbon monoxide in water at 25 degree C is 9.71 * 10 ^-4 mol/(L*atm)
How many moles of CO will dissolve in 1.00 L of water if the partial pressure of CO is 2.75 atm?
Homework Equations
waht pressure of carbon dioxide is required to...
Homework Statement
Cos^2x-Sin^2x/2 SinxCosx
The Attempt at a Solution
I changed cos^2x to 1- sin^2x
which then the equation was 1- s sin^2x/2snxcosx and i have no idea how to make this a single trig. function