Recent content by seongwei

Is it that ideal gases do not possesses potential energy because there are no intermolecular forces. But, real gases do have potential energy and its potential energy is the highest among the different phases. ( Potential Energy of Gas>Liquid>Solid ). I need someone to make these things clear to...

The number of molecules per cubic metre of air at standard temperature and pressure is about 2.7X10^25 / m^3 . What is the average separation of these molecules? I know the number of molecules is derived from the equation pv=nRT.But what does average separation of molecules mean and how do i...

Energy Lost by water = Energy gained by vege + saucepan 4200X1.1X(1oo-87) = 0.45XcX(83+20) + m(900) Im stucked at here. I use the equation mcθ.

Problem Solving -- Calculate the mass of steam condensed 1 ) A jet of steam at 100°C is directed into a hole in a large block of ice. After the steam has switched off, the condensed steam and melted ice are both a 0 degrees Celsius. The mass of water collected is 206 g. Calculate the mass of...