A gas expands and does work on the surroundings equal to 403 joules. At the same time, it absorbs 238 joules of heat from the surroundings. Calculate the change in energy (in joules) of the gas. Report answer to correct significant figures, but do not include units.

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

0.09 moles of sodium sulfate in 12 ml of solution

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.