ok so unknown stuff help :)

1.if unknown to you, your pipet was incorrectly calibrated so that it transferred less then 10 ml of solution, the density you calculated for the liquid would tend to be____( larger/smaller) than the corect value. Explain

2. the density of water is about 1g/mL at room temp. Breifly explain how the density of an aqueous solution at room temperature can be significantly less the 1g/mL Give an example of such a solution

3. how many sigfig figures are justified for the solid density determined from a graduated cylinder and top loading balance data? explain

THANK YOU!