how many students In a class of size 12 m by 1 m can be made to sit IIT each student occupies 2.4square metre of floor area

some of the components of a toothpaste make it basic but the addition of some buffer like citric make the toothpaste neutral . Whitening toothpaste with some form of peroxide try to keep their toothpaste on the acidic side since the peroxide stores better at a lower pH