A capillary tube of length 2.4cm and internal diameter 0.2cm is weighed and its mass is found to be 0.15g. The tube is filled with mercury of density 13.5g/cm3 and weighed again. What will be the new mass of the filled tube?

Could someone . i have tried to solve myself but my calculation is off

What happens when a rubber rod is rubbed with a piece of fur?

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?