Why did the laser beam move when the magnet was placed near it

No because the light can only produce the color the manufacturer gave it and it is thin air unless the laser beam was able to make things on fire then the substance would be called a gas

30litre of li2o is 1.0002mole approximately 1 mole

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i