If 750 g of iron absorbs 22,000 joules, what will the change in temperature be?

How are elements arranged in a periodic table

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

Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?