Chemistry, 23.09.2019 07:20 msitez2442
Which of the following statements is true of an aqueous solution of sodium chloride? a]one that has 30.0 grams of nacl dissolved in 100 grams of water is more concentrated than one that has 15.0 grams of nacl dissolved in 100 grams of water. b]one that has 30.0 grams of nacl dissolved in 100 grams of water is more dilute than one that has 15.0 grams of nacl dissolved in 100 grams of water. c[one that has 30.0 grams of nacl dissolved in 100 grams of water would have the same molarity as one that has 15.0 grams of nacl dissolved in 100 grams of water. d]one that has 30.0 grams of nacl dissolved in 100 grams of water has less solute than one that has 15.0 grams of nacl dissolved in 100 grams of water.
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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
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Chemistry, 23.06.2019 11:00
Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal
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Which of the following statements is true of an aqueous solution of sodium chloride? a]one that has...
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