Q1: What is the volume of water in the container?
A1: Sixty (60) cubic centimeters.
Q2: weight of mass in kilograms?
A2: 0.06 kilogram.
Q3: weight of that mass in newtons?
A3: The "newton" is a force (f) measurement unit: f = m * a. Where: f - force, m - mass and a - acceleration. Then, newton = kilogram * meter / (second squared). Anyway, one cannot measure mass in newtons.
Q4: pressure at the bottom in newtons/square centimeter?
A4: 0.097721 newton per square centimeter. The aqua-calc.com
rectangular solid volume calculator calculates water pressure at the bottom of a container.