A student performed an experiment to determine the percent of water in a hydrate and obtained the following data. Calculate the percent of water in the hydrate. Mass of empty crucible + lid 25.88 gMass of crucible + lid + hydrate 28.45 gMass of crucible + lid + anhydrous salt (after last heating) 28.02 g

Calculate the standard enthalpy of formation of liquid methanol, ch3oh(l), using the following information: c(graphite) + o2 latex: \longrightarrow ⟶ co2(g) latex: \delta δ h° = –393.5 kj/mol h2(g) + o2 latex: \longrightarrow ⟶ h2o(l) latex: \delta δ h° = –285.8 kj/mol ch3oh(l) + o2(g) latex: \longrightarrow ⟶ co2(g) + 2h2o(l) latex: \delta δ h° = –726.4 kj/mol