If .00327 g of a gas dissolves in 0.376 l of water at 867 torr, what quantity of this gas (in grams) will dissolve at 759 torr?

At 759 torr, 0.002 86 g of the gas will dissolve.

Henry’s law states:

, where

where is a proportionality constant called the Henry's Law constant.

If we have the same solute in the same solvent at two different pressures   and ,  

and

Dividing the two equations, k_H cancels and we get

c_1/c_2 = p_1/p_2

c_2 = c_1 × p_2/p_1

The volumes of solvent are the same, so we can use the masses of the solute instead of concentrations.

∴ c_2 = 0.003 27 g × (759 torr/867 torr) = 0.002 86 g

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.