4. If 25.0 grams of water at 15°C absorbs heat causing the water temperature to rise to 22.5°C, how many Joules of heat did the water absorb? Show all work!

How can one make a supersaturated solution? (apex)

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.