Question

Take the food items given below and rub it on a piece of brown/ white paper.Let the paper dry.If a translucent mark is left on the paper,it means fat is present in the food.Do paste the food items(after keeping it in a plastic bag/zip pouch)along with the paper on which you have tested the fat and note down the observation. 1.Rice​

Answer 1

Since the density is equal to the mass divided by the volume, so the mass will be equal to the multiplication of the density and mass. Hence, we have given the one mole of the water in the problem. =6.023×1024 electron. Hence the total number of electrons present in 18mL water is 6.023×1024.