Henry's law is given by the formula $p$=$K_h$$x$. Here $p$ is partial pressure of the gas $K_h$ is henry's constant for that gas and $x$ is mole fraction.Using this you can find it.

Solubility, pressure and Henry's law
If the electric potential is 220V and some device needs 1500watts then how does it suck exactly that amount of electrical energy from outlet?
