Consider this statement: air is matter. which facts best support the statement?

a. balloons can be filled with air.
b. air is essential for life to exist.
c. air has mass.
d. air is not an element.
e. to float on air is to be happy.
f. air can’t be seen.

Energy is the ability to do work which measures what

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

Awalk up the phase change graph worksheet