(ch3)2choh(g)⇌ (ch3)2co(g)+h2(g) δh∘ = +57.3kj what is delta s

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.