Which of the following is the most correct statement about a gas?
options: a gas holds its shape.
a gas takes the shape of its container.
a gas has very little thermal energy.
a gas is not affected by changes in pressure.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.