Calculate the mass in gram of Na+ in 25g of Na2SO4

8 grams

Explanation:

= 23 x 2 = 46

= 32.1 + (16 x 4) = 96.1

In 25g,

So there are 8g Na+

Hope this helps, let me know if you have any questions! :)

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.