The lone pairs in a water molecule cause it to have which shape?

A 104 degree bond angle, or a V shape

Lone pairs in a water molecule cause it to have non linear shape (angular or bent shape)

The lone pairs of water molecules repel each other in a way that water molecules get angular shape instead of linear shape.

Angular molecules (also called bent or V-shaped) have a non-linear shape. For example, water (H2O), which has an angle of about 105°. A water molecule has two pairs of bonded electrons and two unshared lone pairs.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

it's filtration, but this is an assumption so my apologies if i got this