In a 79.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.120. What is the mass of each compone

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In a 79.0-g aqueous solution ofmethanol, CH4O, the mole fraction ofmethanol is 0.120.
What is the mass of each component?
mass of CH4O: ? g CH4O
mass of water: ? g H2O
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Biphenyl, C12H10, is a nonvolatile, nonionizing solutethat is soluble in benzene, C6H6.
At 25 ∘C, the vapor pressure of pure benzene is100.84 Torr. What is the vapor pressure of a solution madefrom dissolving 11.0 g of biphenylin 29.9 g of benzene?
𝑃solution= ? Torr
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How much heat is required to raise the temperatureof 34.7 g of waterfrom −25 °C to 165 °C?
heat: ? kcal
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An aqueous sodium acetate, NaC2H3O2 , solution is madebydissolving 0.180 mol NaC2H3O2 in 0.650 kgof water. Calculate the molality of the solution.
molality: ? m
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A 0.578 g sample of steamat 104.2 ∘C is condensed into a containerwith 4.62 g of water at 16.6 ∘C. Whatis the final temperature of the water mixture if no heat is lost?The specific heat of wateris 4.18 J g⋅ ∘C, the specific heatof steamis 2.01 J g⋅ ∘C, and Δ𝐻vap=40.7 kJ/mol.
𝑇 f= ? °C